Worth 20 points will mark you brainliest!

Worth 20 Points Will Mark You Brainliest!

Answers

Answer 1
The one u clicked is the the right one

Related Questions

Which material has been recycled for over 3,000 years?

Answers

Answer:

plastic

Explanation:

The primary food source for many sea animals is:

crayfish
squid
sea grass
plankton

Answers

Answer:

plankton

Explanation:

like in spongebob lol but for real I'm a marine biologist I know this is the answer lol

Which of the following is not true about one mole?

the mass of 1 mole of carbon atoms = the mass of

1 mole of boron atoms
one mole contains 6.02 x 1023 particles

the number of atoms in 1 mole of carbon = the number of atoms in 1 mole of boron

12 g of carbon equals one mole of carbon atoms

Answers

Answer:

A

Explanation:

Bc ik

The number of atoms in 1 mole of carbon = the number of atoms in 1 mole of boron is not true about one mole.

What element of one mole is false?

It is untrue to say that one mole of fluorine gas weighs more than one mole of oxygen gas. Fluorine gas has a molar mass of 38 grams per mole, whereas oxygen gas has a molar mass of 32 grams per mole, based on their relative molar masses.

A mole of a substance is equal to 6.022 × 10²³ of that substance (such as atoms, molecules, or ions). The number 6.022 × 10²³ is referred to as "Avogadro's number" or "Avogadro's constant."

Since boron has a different molar mass than carbon, the statement that there are the same number of atoms in each mole is untrue.

The ratio of the substance's mass to its molar mass is used to express the number of moles of an element.

Moles  = Mass/Molar mass

Given that the molar masses of carbon and boron differ, the statement that the number of atoms in a mole of carbon is equal to the number of atoms in a mole of boron is false.

Therefore, the correct answer is option c) the number of atoms in 1 mole of carbon = the number of atoms in 1 mole of boron.

The complete question is:

Which of the following is not true about one mole?

a) the mass of 1 mole of carbon atoms = the mass of

b) 1 mole of boron atoms

one mole contains 6.02 x 1023 particles

c) the number of atoms in 1 mole of carbon = the number of atoms in 1 mole of boron

d) 12 g of carbon equals one mole of carbon atoms

To learn more about one mole refer to:

https://brainly.com/question/28037816

#SPJ2

The burning of a sample of propane generated 1 04.6 kJ of heat. All of this heat was used to heat 500.0 g of water that had an initial temperature of 20.0/C. What was the final temperature of the water?

Answers

Answer: 70.0°C

Explanation:

Quantity of heat = Mass * Specific heat * Change in temperature

Quantity of heat = 104.6 KJ

Mass = 500.0 g

Specific heat of water is 4.18 J/g°C

Change in temperature assuming final temperature is x = x - 20

Units should be in grams and joules:

104,600 = 500 * 4.18 * (x - 20)

104,600 = 2,090 * (x - 20)

x - 20 = 104,600/2,090

x = 104,600/2,090 + 20

x = 69.8

= 70.0°C

DUE TOMORROW!!! 15 POINTS
please help!! the answers are already given i just need to show work :( ive been stuck on this for an hour now

Answers

Answer:

A. write balanced chemical equation (including states), for this process.

Explanation:

Almost all hydrocarbon 'burn' reactions involve oxygen; it's by far the most reactive substance in air.  

Hydrocarbon combustions always involve  

[some hydrocarbon] + oxygen --> carbon dioxide + steam.  

C6H6(l) + O2 (g)--> CO2 (g)+ H2O (g)

Balance carbon, six on each side:  

C6H6(l) + O2 (g)--> 6CO2 (g)+ H2O (g)

Balance hydrogen, six on each side:  

C6H6(l) + O2 (g)--> 6CO2(g) + 3H2O (g)

Now, we have fifteen oxygens on the right and O2 on the left.  

Two ways to deal with that. We can use a fraction:  

C6H6 (l)+ (15/2)O2 (g)--> 6CO2 (g)+ 3H2O (g)

Or, if you prefer to have whole number coefficients, double everything  

to get rid of the fraction:  

2C6H6 (l)+ 15O2 (g)--> 12CO2 (g)+ 6H2O (g)

With the SATP states thrown in...  

C6H6(l) + (15/2)O2(g) --> 6CO2(g) + 3H2O(g)

Describe the brightness and temperature of the stars classified as giants.

Answers

Answer:

A hotter star should be brighter than a cooler star. ... Although they are cool [red], they are very luminous, and therefore bright. In the Main Sequence, stars that are cool are not as luminous. Because the energy is spread across a larger area, surface temperatures are actually cooler, reaching only 2,200 to 3,200 degrees Celsius (4,000 to 5,800 degrees Fahrenheit), a little over half as hot as the sun

Explanation:

People's actions can cause air pollution. People can plant trees to help reduce air pollution.
How does planting trees help reduce air pollution?
O A Trees take in nitrogen and dust.
B. Trees block sunlight from reaching the ground.
O c Trees produce oxygen and take in carbon dioxide.
D. Trees add nutrients to the soil that other living things need

Answers

Answer:

c

Explanation:

what is the molecular formula of benzoyl peroxide (c7h5o2) of the molecular mass is 0.242 kg/mol?(show work please)

Answers

Answer : The molecular formula of benzoyl peroxide is [tex]C_{14}H_{10}O_4[/tex]

Explanation :

Empirical formula : It is the simplest form of the chemical formula which depicts the whole number of atoms of each element present in the compound.  

Molecular formula : it is the chemical formula which depicts the actual number of atoms of each element present in the compound.  

For determining the molecular formula, we need to determine the valency which is multiplied by each element to get the molecular formula.

The equation used to calculate the valency is :

[tex]n=\frac{\text{Molecular mass}}{\text{Empirical mass}}[/tex]

As we are given that the molar mass of compound is, 0.242 kg/mol.

Molecular mass = 0.242 kg/mol = 242 g/mol      (1 kg = 1000 g)

The empirical mass of [tex]C_7H_5O_2[/tex] = 7(12) + 5(1) + 2(16) = 121 g/eq

[tex]n=\frac{\text{Molecular mass}}{\text{Empirical mass}}[/tex]

[tex]n=\frac{242}{121}[/tex]

[tex]n=2[/tex]

Molecular formula = [tex](C_7H_5O_2)_n[/tex] = [tex](C_7H_5O_2)_2[/tex] = [tex]C_{14}H_{10}O_4[/tex]

Thus, the molecular formula of benzoyl peroxide is [tex]C_{14}H_{10}O_4[/tex]

convert 100 ml to L can you help mee??

Answers

Answer:

0.1  L

Explanation:

divide the volume value by 1000

Answer:

0.1 L that is the answer

Explanation:

I searched it

What type of plate boundary (divergent, convergent, or transform) is typically
associated with sliding or shear forces?
convergent
transform
divergent

Answers

Answer:

transform

Explanation:

The type of plate boundary associated with sliding or shear forces is a transform plate boundary.

Two or more plates slides laterally past one another due to presence of shear forces acting on them.

In this margin, there is often an occurrence of earthquake. For a divergent margin, plates move apart and away from one another. This leads to the creation or formation of new crusts. At a convergent margin, two plates collides, a plate can subduct under another or both can become uplifted. Tectonic margins are known for their various activities.

Answer:

convergent

Explanation:

Which is the balanced version of the half-reaction below?

Answers

Answer:

The answer is B

Explanation:

Because H2S →S + 2Hplus

Which of the following is a definition of a line segment?

Answers

Answer:   So, a line segment is a piece or part of a line having two endpoints. Unlike a line, a line segment has a definite length.

Explanation:

Answer:

a line segment is a part of a line that is bounded by two distinct end points, and contains every point on the line between its endpoints.

explain with example the combination and decomposition reaction.​

Answers

Answer:

Decomposition reactions require an input of some form of energy. For example, under the influence of an electric field, water breaks down to give hydrogen and oxygen. In the presence of sunlight, hydrogen peroxide decomposes into oxygen and water.

Which of the following reagents can be used to distinguish between sodium sulphite and sodium sulphate?
(1) iron(II) chloride solution
(2) acidified potassium permanganate solution
(3) concentrated nitric acid
A. (1) only
B. (2) only
C. (1) and (3) only
D. (2) and (3) only

please please help this confused me for so long​

Answers

The answer is A si yeah

s. What happens
the heat
from
the heat source?

Answers

Radiation happens when heat move as energy wave called infrared wave directly from its source to something else .
well what happens is radiation happens when heat moves as energy waves, called infrared waves, directly from its source to something else. this is how the heat from the sun gets to earth. in fact, all hot things radiate heat to cooler things. when the heat waves hits the cooler thing,they make the molecule of the cooler object speed up. hopefully this is the correct answer

Moles /Number of Particles Con
A) Convert the following to Moles
(1) 2.03X1022 atoms of lithium, Li

Answers

(2.03x10^22)/(6.02x10^23) = .033721 mol Li

I hope this helps, if not, i am sorry

Can you please help me with this question

Answers

Answer:

First blank: spiral arms

Second blank: center

Explanation:

What is chemical structure about?

Answers

Answer:

chemical structure determines the molecular geometry of ca compound by prtraying the arrangement of atoms and chemical bonds in the molecule..

Explanation:

hope this helps any <3

ANSWER ASAP Which part of the picture shows evidence of matter scattering light waves in
many different directions?
O A. The color of the tree appears black against the sky.
O B. The image of the moon in the sky is incomplete.
OC. The image of the moon on the water's surface is distorted.
OD. The colors on the water's surface match the colors in the sky.

Answers

Answer:

The evidence of matter scattering light wave in many different directions is;

D. The colors on the water's surface match the colors in the sky

Explanation:

Light scattering is used to describe the sending of a given beam of light in many directions (by tiny particles) when the light passes through a medium, due to the disruption of the bath of the light ray as it bumps into the tiny particles

Water has the nature of absorbing the red light. The light that enters the water is scattered by the tiny particles in the water such that the blue light which is the spectrum of light water allows to pass through is reflected along with the reflection of the sky and the colors of the water surface match the colors of the sky.

Answer:

C.

Explanation:

I took the quiz

What is the balanced equation for the manufacture of ethanol from glucose

Answers

Answer:

C6H12O6 → 2C2H5OH + 2CO2

Explanation:

Glucose is an organic molecule, specifically a sugar, with the formula C612O6 while ethanol is another organic molecule with formula; C2H5OH.

However, as rightly said in this question, ethanol can be got from glucose via a process called fermentation in the presence of a catalyst called YEAST. The balanced equation is as follows:

C6H12O6 → 2C2H5OH + 2CO2

A Punnett square is used to _______.

a
predict the genotypic and phenotypic probabilities of possible offspring

b
determine if a trait runs in a family

c
track inherited traits through many generations

d
identify organisms that are carriers of a specific trait

Answers

Answer:

your answer would be

A.predict the genotypic and phenotypic probabilities of possible offspring

Answer:

A is the correct answer

Explanation:

tell me if i got it right!

Can you help me balance the following chemical equation?!
Al(OH)3 + H2CO3 = Al2(CO3)3 + H2O

Answers

Answer: [tex]2Al(OH)_3+3H_2CO_3\rightarrow Al_2(CO_3)_3+6H_2O[/tex]

Explanation:

According to the law of conservation of mass, mass can neither be created nor be destroyed. Thus the mass of products has to be equal to the mass of reactants.

The number of atoms of each element has to be same on reactant and product side. Thus chemical equations are balanced.

The balanced chemical equation will be :

[tex]2Al(OH)_3+3H_2CO_3\rightarrow Al_2(CO_3)_3+6H_2O[/tex]

Carbon Monoxide is a toxic gas that is colorless and tasteless. How many moles of CO are in 1 L of the gas at STP?

28 moles

0.045 moles

22.4 moles

0.224 moles

Answers

Answer:

0.045 moles

Explanation:

Given data:

Moles of CO = ?

Volume of gas = 1 L

Temperature and pressure = standard

Solution:

The given problem will be solve by using general gas equation,

PV = nRT

P= Pressure

V = volume

n = number of moles

R = general gas constant = 0.0821 atm.L/ mol.K  

T = temperature in kelvin

n = PV/RT

n = 1 atm× 1L / 0.0821 atm.L/mol.K × 273 K

n = 1 atm.L / 22.41 atm.L/mol

n = 0.045 mol

How can people conserve water at home?

rinsing dishes with cold water instead of warm water
washing dishes only when the dishwasher is full
bathing pets with a hose instead of a bucket
eating fish bought from the store

Answers

Answer:

washing dishes only when the dishwasher is full

Explanation:

Out of the following options, the best way to conserve water is:

B. washing dishes only when the dishwasher is full

Ways to conserve water:

Conserving water is important because it keeps water pure and clean while protecting the environment.

Turn off the faucet while brushing your teeth.Only run the washing machine and dishwasher when you have a full load.Use a low-flow showerhead and faucet aerators.Fix leaks.Take a Shower of 5 Minutes or Less. Install a Water-saving Toilet Flush System.

Thus, option B is correct.

Find more information about Water here:

brainly.com/question/5060579

how can acids cause chemical weathering

Answers

Acid rain slowly dissolves rocks due to chemical reactions between the acid and the minerals in the rock. Differential Weathering: Softer, less resistant rocks wear away at a faster rate than more weather resistant rocks. More exposure to acid rain results in more rapid weathering.

The acids react with the chemical composition of the rock causes the disintegration of the rocks.

Chemicals when react with the chemical components of the rocks cause the disintegration of the chemical and physical structure of rocks which cause breakage of rocks into parts. This process is called chemical weathering.

For example, the sulfur dioxide gas in the air reacts with the water in the air to form the acid rain.

The acid rain reacts with the chalk or limestone rock that causes the disintegration of the chemical structure and physical structure of rock causing breakage of the chalk or limestone.

Learn more about weathering:

https://brainly.com/question/14426457

Why is it difficult for hydrogen atoms to stick together

Answers

Answer:

So, the energy of two hydrogen atoms is lower when the two atoms are together than when the two atoms are apart; that is why they stay together.

Explanation:

To Identify a mineral, there are tests that are used including:

Answers

Geologists use the following tests to distinguish minerals and the rocks they make: hardness, color, streak, luster, cleavage and chemical reaction.

In Step 5, you will calculate H+/OH– ratios for more extreme pH solutions. Find the concentration of H+ ions to OH– ions listed in Table B of your Student Guide for a solution at a pH = 2. Then divide the H+ concentration by the OH– concentration. Record these concentrations and ratio in Table C. What is the concentration of H+ ions at a pH = 2? mol/L What is the concentration of OH– ions at a pH = 2? mol/L What is the ratio of H+ ions to OH– ions at a pH = 2? : 1

Answers

Answer:0.01

0.000000000001

10,000,000,000

Explanation:

Answer:

1. What is the concentration of H+ ions at a pH = 2?

0.01 mol/L

2. What is the concentration of OH– ions at a pH = 2?

0.000000000001 mol/L  

3. What is the ratio of H+ ions to OH– ions at a pH = 2?

10,000,000,000 : 1

Have a wonderful day/night! :)

What is the pH of a 0.00001 M solution of HCI?

Answers

Answer:

0.00001= 1 x 10^-5. Since HCl is an acid, 1 x10^-5 is the H+ concentration. Write only the number of the exponent. Therefore, pH = 5.

which personal trait do scientists mainly depend upon when they design an experiment

Answers

Answer:

creativity is the personal trait that scientists mainly depend upon when they design an experiment.

Other Questions
Explain how the legislative branch has checks on the three branches of government. How can a reader trace how an author develops a central idea throughout a text? Check all that apply.Uby looking for the denotative and the connotative meanings of the author's wordsO by determining the central idea of each paragraphD by identifying the most important details used to support the central idea of each paragraphOby analyzing how the author uses context to convey the central idea in each paragraphU by summarizing the central idea and key details of each paragraph in a single sentenceU by finding the common element among the central ideas throughout the text Jenna has already cycled 8 kilometers this year,plus she plans to cycle 2 kilometers during each trip to work.Write an equation that shows the relationship between the number of trips to work t and the total distance cycled d. sfdshjkjresahjklkuyresdcvbhjiuyr Please help me I need it by 11:59!!!!!!!!!!!!!! Practice Pages 69&70 What was the message of lady of the golden heart? 2. Which equation is true when x=3?A. 8x = 28B. X - 19 = 16C. 28 + x = 25D. S =1 Find the slope of the line 3,0 and 0,-3 After leaving the hospital following the stabbing incident, King - Multiple-choice questionsTick the correct answer to each of the questions below.1 When selling a product to your client it is important to:a make sure it is the most expensiveb give good advice on how to use itc make sure the sale is quickd put it in an attractive bag2 Always having retail products in stock is one way of:a spending a lot of money on stockb making more moneyc leaving the salon vulnerable to theftd keeping clients happy3 Communication occurs between people through:a body language and speechb talking to the client in consultationc verbal, non-verbal and written formsd verbal and written forms Suppose a normal distribution has a mean of 34 and a standard de ration of 2. What is the probability that a data value is between 30 and 362 Pound your answer to the nearest tenth of a percent. A. 82.9% B. 83.9% C. 81.9% D. 84.9% Which blood component fights and destroys disease-causing bacteria andviruses? Gabby plans to make 30 bracelets to sell at the state fair. How long will it take her?Do not include units (hours) in your answer. Choose the sentence that is grammatically correct. a) T tocas el piano.b) T tocan el piano.c) T toco el piano.d) T tocamos el piano. 6. In general, as both the force and velocity of impact increase, what happens to the diameter ofthe resulting blood droplets? Did the Aztec allow free trade in early America Make a list of States of medieval Nepal How many molecules of nitrogen dioxide NO2 are in 1 mole of NO2? PromptUse the following to write a paragraph analyzing the plot of "The Sniper."1. What is happening as the story begins?2. List 5 strong adjectives that describe the main character.3. Specifically describe the setting. List 4 adjectives that describe the environment4. What is the conflict in the story? What is the Sniper's internal conflict?5. What is the Sniper's state of mind or attitude throughout the story?6. What event is the climax of the story? How does this change the mood of the story?7. What is the resolution of the story? How is the conflict resolved in the story?8. Describe the situational irony at the end of the story.9. What is the theme of the story?10. Why does the author chose not to give the main character a name?