Question 13 of 25
What is the safe way to test the smell of a chemical?
O A. Wafting the vapors toward your nose
O B. Pouring the chemicals into your nose
O C. Placing your nose in the container
O D. Breathing in deeply

Answers

Answer 1
A) wafting the vapors toward your nose

Related Questions

NEED HELP PLSSSS THANK UU

Answers

Answer: rotation

Explanation:

orbitttttttttttt

Explanation:

The main product of the photosynthesis reaction is
OA.
protein.
OB.
sugar.
Oc.
fat.
OD.
DNA.

Answers

Answer: Sugar

Explanation: Because after photosynthesis (Carbon dioxide, water, and sunlight) react, they make two products. Glucose (A sugar) and Oxygen.

To make a balanced equation, 6 H2O + 6 CO2 ---> C6H12O6 + _

Answers

Answer:

6O₂

General Formulas and Concepts:

Chemistry/Biology

Photosynthesis Equation: 6H₂O + 6CO₂ → C₆H₁₂O₆ + 6O₂

Explanation:

Most of the equation comes from the Photosynthesis Equation. Plants take in water and carbon dioxide and sunlight (energy) to produce glucose and oxygen. When we balance the equation and predict reaction. we should get   6O₂ as our answer.

What effects do winds patterns have on climate

Answers

Prevailing winds bring air from one type of climate to another. For example, warm winds that travel over water tend to collect moisture as they travel; the water vapor in the air will condense as it moves into colder climates, which is why temperate coastal areas often receive heavy rainfall.

Hope it Helps! T^T

The solids and liquids with the strongest intermolecular forces of attraction will have the
lowest melting and boiling points.
a. TRUE
b. FALSE

Answers

trueeee!!!
step by step explanation

How we can preserve the wetlands areas of nepal?

Answers

Answer:

Reduce, reuse, and recycle your waste and trash. Protecting the environment helps protect the wetlands, especially since trash can make its way into the water. The best and easiest way to protect the environment is by limiting your household waste.

When a chemical change occurs:

A) the law of conservation of mass is always obeyed
B) the chemical properties of new substances are different from the ones you started with
C) all of the options are true
D) atoms are rearranged

Answers

Answer:

Are composed together

Explanation:

Sodium chloride (NaCl) is formed in a chemical reaction between sodium (Na) and chlorine (Cl2).
What is sodium chloride?
14.
A.
an element
B.
a mixture
C.
a compound
D.
an atom

Answers

I think it is compound

How many electrons can fit in the sixth energy level

Answers

Answer:

72 electrons

Explanation:

The 6th shell could hold up to 2(6)² = 2(36) = 72 electrons

Is a tooth made out of matter or not matter?

Answers

Human teeth are made up of four different types of tissues.

how does the understanding of electron location allow us to change the world?

Answers

Answer:

The absorbed energy will change the electron's position. We can never know both the momentum and position of an electron in an atom.

Explanation:

Identify two reasons why the relative size of an atom become smaller due to the loss of electrons .

Answers

Answer:

nucleus as electrons are being added to the same principal energy level. These electrons are gradually pulled closer to the nucleus because of its increased positive charge. Since the force of attraction between nuclei and electrons increases, the size of the atoms decreases.

Explanation:

Nuclear attractive pull to the electrons results in smaller atomic radius. Two reasons that leads the size of an atom smaller by electron loss are nuclear pulling and emptying outermost orbital.

Why atomic radius reduces by electron loss?

The nucleus have a net positive charge and electrons are negative in charge, thus, each electron experience a nuclear attractive pull. However, each electrons are shielded slightly from this attraction by the surrounding electrons.

The reasons which make the atomic radius smaller are the following.

By losing electrons the total number of electron is reducing therefore, the screening or shielding of an electron by other electron from the nuclear attractive pulling reduces, and thus due to the nuclear attraction, the orbitals shrinks inwards and reduces the atomic size. By losing electron from the outermost orbital if it contains only one electron then the orbital becomes empty and the atomic radius shrinks to the penultimate shell or orbital.

Therefore, due the two reasons mentioned above, the atomic radius reduces by electron loss.

To learn more about atomic size, refer the link below:

https://brainly.com/question/1127028

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Which of the diagrams below shows an atom that is not a form of hydrogen?

Answers

Answer:

I believe is the npp i kinda forgot how to do these lol

Diagram with npp type shows an atom that is not a form of hydrogen.

What is an atom?

An atom is defined as the smallest unit of matter which forms an element. Every form of matter whether solid,liquid , gas consists of atoms . Each atom has a nucleus which is composed of protons and neutrons and shells in which the electrons revolve.

The protons are positively charged and neutrons are neutral and hence the nucleus is positively charged. The electrons which revolve around the nucleus are negatively charged and hence the atom as a whole is neutral and stable due to presence of oppositely charged particles.

Atoms of the same element are similar as they have number of sub- atomic particles which on combination do not alter the chemical properties of the substances.

Learn more about atom,here:

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How many molecules are in 4.5 moles of Ca(OH),?​

Answers

Answer:

We will use dimensional analysis to solve this.

We will need to know Avogadro's number, which is 6.02 × 10²³.

4.5 mol × [tex]\frac{6.02 * 10^{23} molecules}{1 mol}[/tex] = 2.71 × 10²⁴ molecules.

There are 2.71 × 10²⁴ molecules in 4.5 moles of Ca(OH).

61 molecules will be the answer most definitely :)

According to collision and transition state theories, what is the importance of activation energy?

Answers

According to the collision theory, the following criteria must be met in order for a chemical reaction to occur: Molecules must collide with sufficient energy, known as the activation energy, so that chemical bonds can break.

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Thanks and have a happy Christmas

Collision theory expresses that substance responses (in the gas stage) happen because of crashes between reactants.

Importance of activation energy:

To really start a reaction, impacts should be adequately lively (dynamic energy) to break compound bonds; this energy is known as the Activation energy. As the temperature rises, atoms move quicker and impact all the more energetically, significantly improving the probability of bond breakage upon crash.

Find more information about Activation energy here:

brainly.com/question/1380484

need answer ASAP

If 20.0g of water at 56.2°C absorbs 195 J of heat, what is the final temperature?
^in degrees celsius

What mass of water would increase in temperature from 45.0°C to 98.0°C after
absorbing 6830 J of energy?
^IN GRAMS

Answers

Answer:

1. 58.5°C = Final temperature

2. Mass of water = 30.8g

Explanation:

The general equation of specific heat of a substance is:

Q = C*m*ΔT

Where Q is the heat involved in Joules,

C is specific heat (Water = 4.184J/g°C),

m is mass of substance,

ΔT is change in temperature (Final temperature - Initial temperature)

For the first problem:

1. 195J = 4.184J/g°C*20.0g*ΔT

ΔT = 2.3°C = Final T - Initial T

ΔT = 2.3°C + 56.2°C =

58.5°C = Final temperature

In the seconf problem:

2. 6830J = 4.184J/g°C*m*(98.0°C-45.0°C)

6830J / 4.184J/g°C*53°C = m

30.8g = m

Mass of water = 30.8g

What can we do with even more scientific knowledge?

Answers

Explanation:

Scientific knowledge allows us to develop new technologies, solve practical problems, and make informed decisions, both individually and collectively.

Answer:

If we had more scientific knowledge, we would be able to increase the productivity of life-saving equipment that provides a longer life for us

be able to make more sensible and informed decisions

make more achievements in studies and be more accurate etc..

Hope this helps<3

Which of the following best describes the relationship between the speed of sound and the type of medium?

A.
Sound travels slower in air because of the large distance between air particles

B.
Sound travels slower in solids because of the small distance between solid particles

C.
Sound travels slower in air because of the small distance between air particles

D.
Sound travels slower in solids because of the large distance between solid particles

Answers

Answer:

A.  Sound travels slower in air because of the large distance between air particles

Explanation:

Sound is a mechanical wave that requires a medium for its propagation. Without a medium, sound cannot go through easily or readily. This implies that sound cannot be propagated through a vacuum.

A vacuum is an empty space without any particles in side. Sound waves travel fastest the most in solids because the particles are dense and close to one another. The speed of sound in air is the least because of the large distance between air particles. Therefore, the speed of sound is medium dependent

molecules of solid ice cannot
Anything that has mass and takes up space is ____
A. Solid
B. Matter
C. Gas
D. Liquid

Answers

Answer:

d

Explanation:

(d) Liquid O2 conforms to the shape of its container but has a fixed volume; it contains relatively densely packed molecules. (c) Gaseous O2 fills ...

Missing: ice ‎| Must include: ice

What is the density of a block with a volume of 5 cm3 and a mass of 20 g?​

Answers

Answer: 4g/cm^3 or 4000g/L (4kg/L)

Explanation:

I'm not sure what units the question intended so I put both. For the first one, the equation for density is mass/volume so I divided the 20g by 5cm^3 to get 4g/cm^3. Just in case those aren't the intended units for volume and is instead liters, one cm^3 equals one ml. In addition, there are 1000ml in every liter so you can determine the amount per liter by multiplying 4g/ml by 1000 to get 4000g/L or 4kg/L.

I hope this helps.



HELP ASAP EILL MAKE BRAINLEST Students are conducting a la estimating the time takes for the cell cycle in normal chocols They find that the average time for one complete el cycle is 22 hours What arence would they expect to see nerous chien
Cancerous chicken cels will spend more time in the phase
Cancerous cells will not complete all phases of the cell cyce
Cancerus chin cells will complete moss in a shorter amount of time
O Cancerous chicken cols and normales will have the same total amount of time to complete the cell cycle

Answers

Answer: I don't know if this helps but here's some information I think might help.

Usually, cells will take between 5 and 6 hours to complete S phase. G2 is shorter, lasting only 3 to 4 hours in most cells. In sum, then, interphase generally takes between 18 and 20 hours. Mitosis, during which the cell makes preparations for and completes cell division only takes about 2 hours. Calculate the percentage of time spent in each phase by counting the total number of cells in each phase (total in interphase, in prophase, etc.) and dividing each by the total number of cells you counted. How do cancer cells differ in total time required for mitosis? Cancer cells produce 117 minutes faster than regular cells. ... Normal cells require 640 minutes during interphase, cancer cells only need 380. For prophase, cancerous cells need 15 minutes less than regular cells. Another hallmark of cancer cells is their "replicative immortality," a fancy term for the fact that they can divide many more times than a normal cell of the body. In general, human cells can go through only about 40-60 rounds of division before they lose the capacity to divide, "grow old," and eventually die 3.

How many grams of carbon are in 300 g of glucose

Answers

There is 48 grams of carbon

_FeBr3 +_H2SO4 --->_Fe2(SO4)3 +_HBr​

Answers

Answer:

2FeBr₃ + 3H₂SO₄ ⇒ Fe₂(SO₄)₃ + 6HBr

Explanation:

match the products and reactants of both sides.

I NEED HELP RN 40 POINTS

Answers

Answer:

B.) Adding a source of carbon dioxide to the water.

Explanation:

I had that question too.

Diamonds are formed when carbon is placed under extreme heat and pressure. This process
in caves
in the ocean
In the atmosphere of Earth
beneath the surface of Earth,

Answers

Answer:

beneath the surface of Earth

Explanation:

Diamonds are made up of carbon that has been placed under extreme heat and pressure conditions.

These conditions of high pressure and temperature can only be found within the subsurface. As you go deeper to the mantle, the geothermal gradient rises significantly.

Also, the overburden pressure will also be high.

These processes can also occur on other planets and some can be associated to the earth times when the earth was being formed.

The condition at which diamond forms confers some of the distinct natural properties that typifies it.

Please help
As the temperature increases, the molecular motion of the molecules decreases and it
becomes difficult to overcome the polar attractions.
a. TRUE
b. FALSE

Answers

true
step by step explanation:

One gram of salt in swimming pool of water could be considered a _____ solution.​

Answers

Answer:

Soluable

Explanation:

Because salt dissolves in water.. Your question has no background information to go off of

Answer:

dilute

Explanation:

trustt

Based on the diagram, which statement explains how energy is conserved
during this chemical reaction?
А
B
Potential energy
of a system
С
Reaction progress
O A. The potential energy gained by the reaction system (A) is lost
from the surroundings.
B. The potential energy lost by the reaction system (C) is gained by
the surroundings
C. The potential energy changes indicated by A and B involve energy
lost by the surroundings.
D. The potential energy lost during the formation of products (B) is
lost by the surroundings.
PLEASE HELP and try not to get it wrong :(

Answers

Answer:

it's B it's B It's B BBBBBBBBBBBBBBB

9.25x10^-8 x6.40x10^3 in scientific equation

Answers

Answer:

5.92E-4 or 5.92x10^-4

Explanation:

Which statement describes a neutral atom?
A. positively charged, with the number of protons greater than the number of electrons B. negatively charged, with the number of electrons greater than the number of protons C. the number of protons equaling the number of electrons, with varying numbers of neutrons
D. the number of protons equaling the number of valence electrons only

Answers

Answer:

C

Explanation:

A neutral atom always has the same number of electrons and the total number of protons.

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A tombstone ad:_________ a. is permitted in Regulation D offerings. b. is an offer to sell securities. c. can be run prior to the effective date of the registration. d. all of the above In ancient Athens, any adult male citizen could attend a meeting where decisions were made about war and foreign policy.This process gave power to citizens by helping to make sure that citizens couldexchange goods.learn military strategy.participate in government.meet people in other city-states. Read and use the dictionary entry to answer the question.compact[kuhm-pakt]adjective1. joined or packed together; closely and firmly united; dense; solid; compact soil2. arranged within a relatively small space; a compact kitchen[kuhm-pakt]verb1. to join or pack closely together; consolidate2. to make firm or stable[kom-pakt]noun1. a small case containing a mirror, face powder and a puff2. a formal agreement between two or more parties; an economic compact between France and GermanyWhich sentence correctly uses the word compact as a verb?Carlos chose a compact gift that fit into an envelope.The two nations formed a compact to increase trade.William compacts the soda cans so they fit into the recycling container.Marcus found a broken makeup compact under the park bench. A line of the equation has a slope of a/b, where a and b are integers. What is the slope of the line that is perpendicular to this line? What are the parts of the plot in Antigone? 2p - 3q - 4r + 6r -2q + p Lawrence is writing a mystery series about a junior detective named Dillon. His first story is about a stolen horse. In order to encourage readers to read the next book in the series, what should Lawrence include in this story's conclusion? A. a new conflict for Detective Dillon B. information about the horse's appearance C. an interesting fact about horses D. details about Detective Dillon's love of horses When an element ejects an alpha particle, the mass number of that elementA.reduce by 4.B.remains unchanged.C.increase by 1.D. reduce by 1. Is 9 an irrational number? A parabola had a vertex at (3,4) and passes through the point (5,-4) what is the standard form equation for the parabola.. help pleasee Black Guard Security has annual sales of $373,000 and a collection period of 20.74 days. What is the company's average balance in accounts receivable Point A is at (3,2.7) and point B is at (3,1.4) on a coordinate grid. The distance between the two points is __. Numbers and decimals onlyPLEASE HELP ASAP The heart is an example of several similar tissues working together to do a specific job for an organism, which level of organization represents the heart? cellBtissueCorganDorgan system what is the median for 9, 1, 9, 6, 5 and for 2, 10, 7, 1 PLEASEEEEE HELPPPP MEEEE!!!! There are 5 friends who decide to split an 88- ounce bag of popcorn. If they split it evenly, how many ounces of popcorn will each friend get?Solution:Number Model:Explain what you did with the remainder and why. Find the Sum. One and seventy-four hundredths added to fourteen and seven tenths. Mandy is writing a paragraph about her favorite basketball team. She wants to explain that the team is so successful because the players work together. What would be the best type of evidence to illustrate Mandys proposed topic? a few examples of how the players successfully scored points a brief history of the game of basketball a quotation from the coach about the players a comparison of current players with past successful members of the team ProG0=-RT in k Known as The Roman roads allowed Rome to _____________ Help much of the pollution in the environment is a result of A.the use of landfillsB.Inadequate waste disposalC.The use of too much water D. Newer Pollution control devices used at factories