Chromatography
separates a solution based
on differences in how its
components ________in
different phases of matter.

Answers

Answer 1
Speed.
Chromatography separates several solutes by the speed the move

Related Questions

Match the chemical equation with the correct reaction type:
Column A
Column B
1.
Fe +52 - Fe253
2.
Pb(NO3)2 + K2CrO 4 PbCrO 4 +KNO3
a. single replacement
b. double replacement
C. decomposition
3.
H2 + N2 + NH3
d. combustion
4.
Fe + CuCl2 - FeCl2 + Cu
e synthesis
5.
KCIO3 -KCI + O2
6.
Mg + HCI-H2 + MgCl2
7.
C3Hg + O2 CO2 + H2O
8.
Zn + HCI - ZnCl2 + H2
9.
NH3-N2 + O2
10.
AgNO3 + Cu Cu(NO3)2 + Ag
f70X

Answers

1.

Fe +52 - Fe253

SYNTHESIS REACTION

A synthesis reaction occurs when two or more reactants combine to form a single product.

2.

Pb(NO3)2 + K2CrO 4 PbCrO 4 +KNO3

DOUBLE REPLACEMENT

A double-replacement reaction exchanges the cations (or the anions) of two ionic compounds.

3.

H2 + N2 + NH3

SYNTHESIS REACTION

A synthesis reaction occurs when two or more reactants combine to form a single product.

4.

Fe + CuCl2 - FeCl2 + Cu

SINGLE REPLACEMENT

A single-displacement reaction, is a chemical reaction in which one element replaces an/other element in a compound.

Note. An element can only replace an element that it is higher than in the electrochemical series or an element that is less reactive than itself.

5.

KCIO3 -KCI + O2

DECOMPOSITION REACTION

A decomposition reaction is a reaction in which a compound breaks down into two or more simpler substances.

Most times this type of reaction requires an in put of energy.

It is usually an endothermic reaction as heat is mostly absorbed.

6.

Mg + HCI-H2 + MgCl2

SINGLE REPLACEMENT

A single-displacement reaction, is a chemical reaction in which one element replaces an/other element in a compound.

Note. An element can only replace an element that it is higher than in the electrochemical series or an element that is less reactive than itself.

7.

C3Hg + O2 CO2 + H2O

COMBUSTION REACTION

Combustion reaction is a high-temperature exothermic redox chemical reaction between a fuel (example propane C3H8) and an oxidant, usually atmospheric oxygen, that produces oxidized, often gaseous products.( mostly C02)

It can also be referred to as burning.

Combustion reaction is one of the chemical characteristics of hydrocarbons.

8.

Zn + HCI - ZnCl2 + H2

SINGLE REPLACEMENT

A single-displacement reaction, is a chemical reaction in which one element replaces an/other element in a compound.

Note. An element can only replace an element that it is higher than in the electrochemical series or an element that is less reactive than itself.

9.

NH3-N2 + O2

DECOMPOSITION REACTION

A decomposition reaction is a reaction in which a compound breaks down into two or more simpler substances.

Most times this type of reaction requires an in put of energy.

It is usually an endothermic reaction as heat is mostly absorbed.

10.

AgNO3 + Cu Cu(NO3)2 + Ag

f70X

SINGLE REPLACEMENT

A single-displacement reaction, is a chemical reaction in which one element replaces an/other element in a compound.

Note. An element can only replace an element that it is higher than in the electrochemical series or an element that is less reactive than itself.

Ethane- (-89) Butane- (0) Methanol- (64.7) Hexane- (69) Pentadecane- (270) Heptadecane- (302) a) A mixture of pendtadecane and heptadecane can be separated by______ b) Which pair of compounds are easiest to separate (i) Ethane and Pentadecane (ii) Ethane and Heptadecane (iii) Butane and Hexane (iv) Butane and Heptadecane

Answers

Answer:

(ii) Ethane and Heptadecane

Explanation:

The separation of all the species listed in the answer options for the question depends on the molar mass of each specie.

Ethane is a low molecular mass gas. It exists in the gaseous state at room temperature. However, heptadecane appears as a liquid because it has a greater relative molecular mass.

It is very easily to distinguish between the gas, ethane and the liquid heptadecane which is a high molecular mass alkane, hence the answer.

What scientific instrument is sensitive enough to detect a planet transiting a star?

Answers

Answer:

Photometer

Explanation:

A photometer (photo comes from the Greek for light) measures the light coming from 140,000 stars in Kepler's stationary field of view. If a planet transits (passes in front of) any star the amount of light from the star is reduced enough so that the photometer senses it and relays the information back to the Kepler team.

Scientific instruments are tools used for researching the universe and natural sciences. A Photometer is sensitive enough to detect a planet transiting a star. Thus, option D is correct.

What is a Photometer?

A Photometer is a device that converts light energy into electrical voltage by the photoelectric effect given by Einstein. It uses Quantum mechanics to convert the energy possessed by the photons and electrons. It follows Ohm's law to convert energy.

It is used to detect the planets transiting stars as they can detect the light energy as it uses the electromagnetic radiation of various wavelengths to convert them by the photodiode, resistor, and a multiplier.

Therefore, option D. a photometer is used to detect the planets in the universe transiting stars.

Learn more about photometers, here:

https://brainly.com/question/15586577

#SPJ2

Your question is incomplete, but most probably your full question was, What scientific instrument is sensitive enough to detect a planet transiting a star?

Atomic force microscopeSolar arraysSatellite RadioPhotometer

In human cells, a dynamic equilibrium exists between carbonic acid (H2CO3) and carbon dioxide (CO).
H2CO3(aq) = CO2() + H200
When a person exercises, the body's cells metabolize glucose to gain energy. This metabolism also causes an increase in the
concentration of carbon dioxide.
Le Chatelier's principle states that stresses applied to a system in dynamic equilibrium will cause the system to change in order to
alleviate those stresses. According to this principle, how would an increase in carbon dioxide concentration affect the system?
A. There would be a decrease in the concentration of carbonic acid.
В. There would be an increase in the concentration of glucose.
C. There would be an increase in the concentration of water.
There would be an increase in the concentration of carbonic acid.
D There would be an increase in the concentration of carbonic acid.

Answers

D There would be an increase in the concentration of carbonic acid

There would be an increase in the concentration of carbonic acid - this is how an increase in carbon dioxide concentration influences the system.

What is dynamic equilibrium?

In chemistry, a dynamic equilibrium lives once a reversible reaction occurs. Substances transition between the reactants and products at equal rates, indicating there is no net change. Reactants and products exist formed at such a rate that the concentration of neither changes. It is a precise example of a system in a steady state. After a time, a reversible reaction in a closed system can get what we call a dynamic equilibrium.

The correct answer is option D.

To learn more about dynamic equilibrium refer to:

https://brainly.com/question/12920261

#SPJ2

What does empirical fomula means with examples ​

Answers

scienece of the end. kindgoms will do

A mixture of gasoline and air explodes when it encounters a spark. This is
known as
O A. a synthesis reaction
O O O
B. a precipitation reaction
C. fuel efficiency
o
D. a combustion reaction
SUBMI

Answers

Answer:

D. A combustion reaction

Explanation:

45. The following data was collected for 3 compounds:
Mass of Nitrogen that combines with 1 g of Oxygen
Compound A 1.750 g
Compound B 0.8750 g
Compound C 0.4375 g
Show whether these are the same or different compounds. What chemical law is being observed here?

Answers

Answer:

The three compounds are different compounds

Explanation:

The mass of Nitrogen that combines with 1 gram of Oxygen in  Compound A = 1.750 g

The mass of Nitrogen that combines with 1 gram of Oxygen in  Compound B  = 0.8750 g

The mass of Nitrogen that combines with 1 gram of Oxygen in  Compound C  = 0.4375 g

According to the law of multiple proportions, when atoms of two different elements react to form compounds, the masses of one of the elements that combines with a fixed mass of the other element are in small whole number ratios.

The ratio of the masses are;

Mass of Nitrogen in Compound B/(Mass of Nitrogen in Compound C =  0.8750/0.4375 = 2

Mass of Nitrogen in Compound A/(Mass of Nitrogen in Compound C =  1.750/0.4375= 4

Mass of Nitrogen in Compound A/(Mass of Nitrogen in Compound B =  1.750/0.8750= 2

Given that the masses of Nitrogen in the three compounds are in small whole number ratios, the three compounds, Compound A, Compound B, and Compound C are different compounds.

A hot metal plate at 150°C has been placed in air at room temperature. Which event would most likely take place
over the next few minutes?
Molecules in both the metal and the surrounding air will start moving at lower speeds.
Molecules in both the metal and the surrounding air will start moving at higher speeds.
The air molecules that are surrounding the metal will slow down, and the molecules in the metal will speed up
The air molecules that are surrounding the metal will speed up, and the molecules in the metal will slow down

Answers

Answer:

d

Explanation:

if 193 ml of chlorine gas was collected at 21 celsius, what volume would it have if the temperature dropped to 0 celsius

Answers

Answer:

New volume of chlorine gas (V2) = 179 ml (Approx)

Explanation:

Given:

Volume of chlorine gas (V1) = 193 ml

Temperature of chlorine gas (T1) = 21°C = 21 + 273 = 294 k

New temperature of chlorine gas (T2) = 0°C = 0 + 273 = 273 k

Find:

New volume of chlorine gas (V2) = ?

Computation:

Using charle's law

V1 / T1 = V2 / T2

193 / 294 = V2 / 273

V2 = 179.21

New volume of chlorine gas (V2) = 179 ml (Approx)

You are given two aqueous solutions with different ionic solutes (Solution A and Solution B). What if you are told that Solution A has a greater concentration than Solution B by mass percent, but Solution B has a greater concentration than Solution A in terms of molality? Is this possible? If not, explain why not. If it is possible, provide example solutes for A and B and justify your answer with calculations.

Answers

Answer:

Yes, it is possible. Let us consider an example of two solutions, that is, solution A having 20 percent mass RbCl (rubidium chloride) and solution B is having 15 percent by mass NaCl or sodium chloride.  

It is found that solution A is having more concentration in comparison to solution B in terms of mass percent. The formula for mass percent is,  

% by mass = mass of solute/mass of solution * 100

Now the formula for molality is,  

Molality = weight of solute/molecular weight of solute * 1000/ weight of solvent in grams

Now molality of solution A is,  

m = 20/121 * 1000/80 (molecular weight of RbCl is 121 grams per mole)

m = 2.07

Now the molality of solution B is,  

m = 15/58.5 * 1000/85

m = 3.02

Therefore, in terms of molality, the solution B is having greater concentration (3.02) in comparison to solution A (2.07).

In common speech, some people may use the terms hypothesis and theory interchangeably. In science, however, the terms have different meanings. What do you think is an important difference between a hypothesis and a theory?

Answers

Answer: In science, a hypothesis is a possible explanation for an observation, while a theory is an explanation that is supported by a large body of evidence.

Explanation: exact answer

A sample of 0.562 g of carbon is burned in oxygen in a bomb calorimeter, producing carbon dioxide. Assume both the reactants and products are under standard state conditions, and that the heat released is directly proportional to the enthalpy of combustion of graphite. The temperature of the calorimeter increases from 26.74 °C to 27.93 °C. What is the heat capacity of the calorimeter and its contents?

Answers

Answer:

The correct answer is 15.54 kJ per degree C.

Explanation:

The enthalpy change for one mole of a substance, which combines or burns with the oxygen under the standard conditions, that is, at 25 degree C and 1 bar pressure is known as the standard molar enthalpy of combustion. The amount of heat transferred can be calculated by using the formula, q = mcΔT -------------(i)

Here q is the amount of heat transferred, c is the specific heat, ΔT is the change in temperature, and m is the mass of the substance. As in case of bomb calorimeter, mass if considered constant, thus, for calorimeter the equation mentioned will become, q = cΔT ---- (ii)

The standard molar enthalpy of combustion for carbon is -393.5 kJ/mol, that is, -393.5 kJ per mole of heat is generated by burning one mole of carbon. The molecular mass of carbon is 12 gram per mole.  

Thus, the number of moles of carbon equivalent to 0.562 grams of carbon can be determined as,  

Number of moles of carbon = mass / molecular mas

= 0.562 grams / 12 gram per mole

= 0.047 mol

The heat generated by burning 0.562 grams or 0.047 mole will be,  

q = ΔH° × number of moles

= (-393.51 kJ/mol) × 0.047 mol

= -18.49 kJ, the negative sign shows that the heat is produced.  

To find heat capacity of calorimeter, put the value of q as -18.49 kJ, for ΔT as (27.93 °C - 26.74 °C) in the equation (ii)

18.49 kJ = c × (27.93 - 26.74)

c = 18.49 kJ/1.19 °C

c = 15.54 kJ/°C

Answer in the correct significant figures: 31.2 x 4.13*

Answers

Answer:

1.29* 10^2

Explanation:

multiply them and then round

Explain the different between a molecule and a compound.

Answers

Answer:

-A molecule is the smallesr part is compound whereas a compound is the combination of two or more atoms in a fixed proportion by wiehgt.

- A glass of water is an example of compound but a small portion of water can be called molecule.

Calcula el %m/v de alcohol en una mezcla utilizada para la desinfección de manos formada por: 15 ml de agua (densidad=1g/ml), 105 g de etanol (densidad: 0,798 g/ml) y 4,5 gramos de jabón líquido (densidad= 1,5 g/ml)

Answers

Answer:

%m/v =70%

Explanation:

El %m/v es una unidad de concentración que se define como cien veces la división entre la masa de una sustancia (En gramos) y el volumen total en el que esta sustancia se encuentra (en mL).

En el problema, debemos hallar la masa de etanol (Alcohol) y el volumen total de la solución.

Masa alcohol:

Ya te la dan en el problema: 105g

Volumen solución:

Volumen agua: 15mL

Volumen etanol: 105g × (1mL / 0.798g) = 131mL

Volumen Jabón líquido: 4.5g × (1mL / 1.5g) = 3mL

Volumen: 15mL + 131mL + 3mL

149mL

Así, el %m/v de alcohol en la solución es:

%m/v = (105g / 149mL) × 100

%m/v =70%

Which of the following has the least H+ ions in its solution?
A. Carbonic acid solution with a pH of 4.
B. Ethanoic acid solution with a pH of 6.5
C. Ammonia solution with a pH of 12.
D. Hydrochloric acid solution with a pH of 1.

WILL GIVE BRAINLIEST IF CORRECT!!

Answers

Answer:

The answer is D. Hydrochloric acid solution with a pH of 1.

Explanation:

I just took the same quiz

Hydrochloric acid solution with a pH of 1. Hence, option D is correct.

What is an acid?

An acid is an electrolyte that hydrolyses in water to release hydrogen ions.

The lower the pH the greater the concentration of H+ ions. Hydrochloric acid with a pH of 1 is a strong acid and is highly ionised in solution.  It has the most H+ ions.

Hence, option D is correct.

Learn more about acid here:

https://brainly.com/question/13380222

#SPJ5

Plz help me...!!! I need this answer by today!....

What is the weight of a 98 kg astronaut on the Mars where the value of the gravitational pull is 3.711 m/s2?
What is his mass on earth? What is his weight on Venus where the gravitational pull is 8.87 m/s2?


Answers

Answer:

Explanation:

given mass on earth =98 kg

gravitational pull on mars =3.711 m/s2

gravitational pull on venus =8.87 m/s2

weight of the body on mars =weight on earth/9.81 m/s2 *3.711 m/s2

W=98 kg*3.711 /9.81m/s2

W=37.07 kg

weight on the venus =weight on earth*8.87 m/s2 /9.81 m/s2

W= 98 kg*7.87 m/s2/9.81 m/s2

W=78.62 kg

Chemical change example

Answers

Answer: burning paper

Explanation:

The paper burns in air to form smoke and ash. which makes it a chemical change.

A 1.30 L buffer solution consists of 0.107 M butanoic acid and 0.345 M sodium butanoate. Calculate the pH of the solution following the addition of 0.075 moles of NaOH . Assume that any contribution of the NaOH to the volume of the solution is negligible. The Ka of butanoic acid is 1.52×10−5 .

Answers

Answer:

The pH of the solution following the addition of 0.075 moles of NaOH is 5.7.

Explanation:

The equation of the buffer solution is the following:

C₄H₇O₂H(aq) + H₂O(l) ⇄ C₄H₇O₂⁻(aq) + H₃O⁺(aq)     (1)    

The pH of the buffer solution can be found using the Henderson-Hasselbalch equation:

[tex] pH = pKa + log(\frac{[NaC_{4}H_{7}O_{2}]}{[C_{4}H_{8}O_{2}]}) [/tex]   (2)

The NaOH added will react with butanoic acid tot produce sodium butanoate:

C₄H₇O₂H(aq) + OH⁻(aq) ⇄ C₄H₇O₂⁻(aq) + H₂O(l)  (3)          

[tex] n_{C_{4}H_{7}O_{2}H}_{i} = C*V = 0.107 M*1.30 L = 0.139 moles [/tex]

[tex] n_{C_{4}H_{7}O_{2}^{-}} = 0.345 M*1.30 L = 0.449 moles [/tex]

[tex] n_{NaOH} = 0.075 moles [/tex]

[tex] n_{C_{4}H_{7}O_{2}H} = 0.139 moles - 0.075 moles = 0.064 moles [/tex]

[tex] n_{C_{4}H_{7}O_{2}^{-}} = 0.449 moles + 0.075 moles = 0.524 moles [/tex]

[tex]C_{C_{4}H_{7}O_{2}H} = \frac{0.064 moles}{1.30 L} = 0.049 M[/tex]

[tex] C_{C_{4}H_{7}O_{2}^{-}} = \frac{0.524 moles}{1.30 L} = 0.403 M [/tex]

Now, from equation (1) we have:

C₄H₇O₂H(aq) + H₂O(l) ⇄ C₄H₇O₂⁻(aq) + H₃O⁺(aq)

0.049 - x                           0.403 + x            x  

[tex] Ka = \frac{[C_{4}H_{7}O_{2}^{-}][H_{3}O^{+}]}{C_{4}H_{7}O_{2}H} [/tex]

[tex]1.52 \cdot 10^{-5} = \frac{(0.403 + x)x}{0.049 - x}[/tex]

[tex]1.52 \cdot 10^{-5}*(0.049 - x) - (0.403 + x)x = 0[/tex]

By solving the above equation for x we have:            

x = 1.85x10⁻⁶ = [H₃O⁺]

So, the concentration of butanoic acid and sodium butanoate is:

[tex][C_{4}H_{7}O_{2}^{-}] = 0.345 + 1.85 \cdot 10^{-6} = 0.345 M[/tex]

[tex][C_{4}H_{7}O_{2}H] = 0.049 - 1.85 \cdot 10^{-6} = 0.049 M[/tex]

Finally, from equation (2) we have:

[tex] pH = pKa + log(\frac{[NaC_{4}H_{7}O_{2}]}{[C_{4}H_{8}O_{2}]}) [/tex]

[tex]pH = -log(1.52 \cdot 10^{-5}) + log(\frac{0.345}{0.049}) = 5.7[/tex]

Therefore, the pH of the solution following the addition of 0.075 moles of NaOH is 5.7.

I hope it helps you!

Which of the following elements has a complete outer shell of electrons? A. Iron (Fe) B. Hydrogen (H) C. Neon (Ne) D. Nitrogen (N)

Answers

Answer:

The answer is Neon

Answer:

neon

Explanation:

neon has a complete outer 2n shell

why is an element considered a pure substance​

Answers

Answer:

Because they cannot be separated into more then one type of substance.

Explanation:

Answer:

Elements are made of only one kind of atom. The particles can be a single atom or a molecule made of only one kind of atom. There is no physical change that can separate elements into more than one kind of substance. This makes an element a pure substance.An element is made up of only one type of atom. An element cannot be broken down into a simpler form.

Do you think it’s important that forensics is categorized as a science? Why or why not?

Answers

Yes I do think it is important for forensics to be classified as a science. The definition of science is the intellectual practice and activity income passing the systematic study of the structure and behavior of the physical and natural world through observation and experiment. The definition of forensics is scientific test or techniques used in connection with the detection of crime. Scientific process are used for and six therefore it is important for it to be categorized as a science.

3.0 cm x 4.0 cm x 1.0 cm

[?]cm^3​

Answers

Explanation:

Hi there!!

you asked to multiply these all right,

you can simply multiply it ,

=3cm × 4 cm × 1cm

= 12cm^2×1cm (4×3=12)

= 12cm^3 (12×1=12)

Therefore, theanswer is 12 cm^3.

Hope it helps..

When a substance's particles are packed together tightly and have a definite shape and
volume...it is said to be in what state?
solid
gas
plasma
liquid

Answers

Answer:

solid

Explanation:

describe melting of a solid

Answers

Answer- The particles in a solid gain enough energy to overcome the bonding forces holding them firmly in place. Typically, during melting, the particles start to move about, staying close to their neighbouring particles, then move more freely.

Which of the following is a characteristic property of noble gases? A. They only react with each other B. They do not react chemically C. They react violently in water D. They react violently in air.

Answers

Answer:

B.They do not react chemically

Explanation:

This is because all noble gases haves full outer shell therefore they don’t participate in bonding.They are referred to as inert which means unreactive.

Answer:

They do not react chemically

Explanation:

Scientists from different fields are trying to understand how the global climate is reacting to the changes caused in nature, and by human activities. They have come up with conflicting interpretations. Which of these is the most likely outcome of differences in interpretations made by scientists on the issue of global climate?

Answers

Answer:

New ideas would be created and tested

Explanation:

All old ideas would be discarded.

Scientific evidence would be weakened.

New ideas would be created and tested.

The limitations of science would be evident.

In science, old ideas are usually improved or modified and not entirely discarded. The old ideas form the basis for new ideas after extensive reviews. Differences in the interpretations made by scientists on any particular phenomenon give rooms for reviews. The reviews often generate new ideas or hypotheses and these can be tested using relevant experimental procedures according to the scientific method.

Hence, the correct answer would be that new ideas would be created and tested.

Which is not a characteristic of all metals? Select one: a. soft and easy to cut b. Good electrical conductors c. Ductile and malleable

Answers

The answer is option a.soft and easy to cut


Hope it helps
And if it does pls mark as brainliest

PLEASE HELP!! What direction do you predict the addition of a base to the solution containing bromophenol blue will drive the equilibrium? Explain your prediction in terms of Le Châtelier's principle.

Answers

Answer:

Below is the clarification of that same particular question.

Explanation:

Le Chatlier's theory states that whenever an equilibrium mechanism is disrupted by environmental influences, the program responds by changing the supplies information of its constituents in a somewhat way that the disturbance is invalidated and reaches a stable equilibrium during that disrupted stage, with concentrations of stability differently than ever before.Bromothymol blue seems to be a phenolic subs lone which always allows it to act throughout aqueous solutions as an acidic solution. Being such an acid (weak), it should not add to rapid, as well as introduces a balance with its accompanying but mostly disconnected form.

For that kind of weak diprotic predictor, the standard economic statement can indeed be published as:

    ⇒  [tex]H_2In_(aq)\rightleftharpoons In^{2-} +2H^+[/tex]

It could be conclusively proven from either the theory of Le Charlier whereby, that whenever a strong acid becomes applied, the full disorientation of one or the other, through equilibrium formation, induces an increase throughout the medium's proton concentrations.Likewise, it absorbs the protons throughout the media to split water that whenever a solution is added. So, particle concentration throughout the medium is decreasing. To accommodate for this transition, the equilibrium reacts by moving to the correct i.e. causing further dissociation of the optimistic predictor into their dianion through protons, thereby attempting to nullify that perturbation.

which state of matter is Na OH(s)​

Answers

Explanation:

SOLID

Sodium hydroxide exists in the solid phase at room temperature. You would find it in the lab as hemispherical white solid pellets. The phase of a substance depends on temperature and pressure. As you heat a solid, it will melt and change to the liquid phase.

Other Questions
Consider this synthesis of isoamyl acetate based on this week's experimental methods, after refluxing the reaction mixture for 25 minutes, what is likely present in solution An electron moves on a circular orbit in a uniform magnetic field of 7.8310-4 T. The kinetic energy of the electron is 55.3 eV. What is the diameter of the orbit? What are the slope and y-intercept of the equation 2x - 5y = -10? PLZ HELPPart AWhat lesson does Mr. Bixby try to teach the narrator in A Cub Pilot?A. to know when he is being trickedB. not to be so certain of his own abilitiesC. not to rely on his existing knowledgeD. to keep a cool head in tense situationsQuestion 2Part BWhich statement from A Cub Pilot best supports the answer in Part A?A. You shouldnt have allowed me or anybody else to shake your confidence in that knowledge. Try to remember that. And another thing: when you get into a dangerous place, dont turn coward."B. When the apprentice has become pretty thoroughly acquainted with the river . . . he presently begins to imagine that it is his courage that animates him.C. Mr. Bixby . . . sent somebody down to the forecastle with some mysterious instructions to the leadsmen . . . and then Mr. Bixby went into hiding behind a smokestack where he could observe results.D. The idea of being afraid of any crossing in the lot, in the daytime, was a thing too preposterous for contemplation. Compensate for the risk. Delay an action. Reject the risk. Transfer the risk. A squad needs to cross a narrow footbridge across a windy, mountain chasm to execute a critical mission. The squad leader is concerned about the hazards and associated risk, so he raises the issue to the platoon commander. The platoon commander directs that each member of the squad become linked to a single rope that is anchored to a nearside belay. This directive is an example of which type of risk control Ron bought a cycle for $800 and sold it at a loss of $160. What is his selling price? The area of a rectangular garden if 6045 ft2. If the length of the garden is 93 feet, what is its width? 4 - Q = -2 what is Q How many primary,secondary and Tertiary carbons are in the compound. 2,3-dimethyl pentane. AndHow many primary hydrogen Suppose you have been inducted as IT Consultant (Cyber Security) in a growing E-Commerce driven business. How will you ensure security/privacy for online transactions over the internet while securing customer network/information/credentials? Design a class named Rectangle to represent a rectangle. The class contains:Two double data fields named width and height that specify the width and height of the rectangle. The default values are 1 for both width and height.A no-arg constructor that creates a default rectangle.A constructor that creates a rectangle with the specified width and height.A method named getArea() that returns the area of this rectangle.A method named getPerimeter() that returns the perimeter.Draw the UML diagram for the class then implement the class. Write a test program that create two Rectangle objects - one with width 4 and height 40, and the other with width 3.5 and height 35.9. Display the width, heigth, area, and perimeter of each rectangle in this order. 1. 3x + 6y = 3 and 7x + 3y = 7ons for bo solve 16y = 80show work please i wanna understand! Read the excerpt from Warriors Don't Cry. The next day, in the Sunday paper, I saw a pitiful closeup photograph of Elizabeth, walking alone in front of Central on that first day of integration. It pained my insides to see, once again, the twisted, scowling white faces with open mouths jeering, clustered about my friend's head like bouquets of grotesque flowers. It was an ad paid for by a white man from a small town in Arkansas. "If you live in Arkansas," the ad read, "study this picture and know shame. When hate is unleashed and bigotry finds a voice, God help us all." I felt a kind of joy and hope in the thought that one white man was willing to use his own money to call attention to the injustice we were facing. Maybe the picture would help others realize that what they were doing was hurting everybody. What is the central idea of the excerpt The cost in dollars y of producing x computerdesks is given by y = 40x + 4000X100200300a. Complete the tableyb. Find the number of computer desks that can be produced for $6200. (Hint: Find x when y = 6200.)a. Complete the table.100200300yb. For $6200,_ computer desks can be produced Cul es el origen del las lneas de Nazca?Question 3 options:Son de un grupo indgena de Per.Es un misterio.El viento del desierto las cre.Son unos animales del desierto. What countries compromised the triple entente Suppose that the cost of renting a snowmobile is $37.50 for 5 hours. a. If c represents the cost and represents the hours, which variable is the dependent variable?b. What would be the cost of renting 2 snowmobiles for 5 hours? please and thanks ( i"ll give brainiest ) What is the distance between the two points in simplest radical from? P(2,8) and B(1,3) What argument does Roosevelt make in thispassage?Read the passage from Eleanor Roosevelt's speechon the adoption of the Universal Declaration ofHuman Rights.The first two paragraphs of the amendment toarticle 3 deal with the question of minorities, whichcommittee 3 decided required further study, and hasrecommended, in a separate resolution, theirreference to the Economic and Social Council andthe Human Rights Commission. As set out in theSoviet amendment this provision clearly states"group," and not "individual," rights.The Soviet amendment to article 20 is obviously avery restrictive statement of the right to freedom ofopinion and expression. It sets up standards whichwould enable any state practically to deny allfreedom of opinion and expression without violatingthe article. It introduces the terms "democratic view.""democratic systems," "democratic state," ando If the Assembly fails to approve the Sovietamendments, individual freedom may soondisappear.o If the Assembly fails to approve the Sovietamendments, the Soviets might have to declarewarThe Soviet amendments mention fascism, whichis too controversial a topic for the UDHR.0 The Soviet amendments endanger humanfreedoms by emphasizing group rights overindividual rights