50 POINTS PLEASE ANSWER CORRECTLY
Two balls collide on a pool table. Before the collision, ball 1 is traveling with a speed of 4 m/s, and ball 2 is at rest. After the collision both balls are in motion.
What has happened in this collision?

A. There was no change in ball 2's velocity, therefore momentum was not conserved.

B. Ball 2's velocity decreased, and it gained some of ball 1's momentum.

C. Ball 1's velocity decreased, and it gained momentum.

D. Ball 2's velocity increased, and it gained some of ball 1's momentum.

Answer:

Explanation:

The first thing that you need to do here is to calculate the theoretical yield of the reaction, i.e. what you get if the reaction has a

100

%

yield.

The balanced chemical equation

N

2

(

g

)

+

3

H

2

(

g

)

→

2

NH

3

(

g

)

tells you that every

1

mole of nitrogen gas that takes part in the reaction will consume

3

moles of hydrogen gas and produce

1

mole of ammonia.

In your case, you know that

1

mole of nitrogen gas reacts with

1

mole of hydrogen gas. Since you don't have enough hydrogen gas to ensure that all the moles of nitrogen gas can react

what you need



3 moles H

2

>

what you have



1 mole H

2

you can say that hydrogen gas will act as a limiting reagent, i.e. it will be completely consumed before all the moles of nitrogen gas will get the chance to take part in the reaction.

So, the reaction will consume

1

mole of hydrogen gas and produce

1

mole H

2

⋅

2 moles NH

3

3

moles H

2

=

0.667 moles NH

3

at

100

%

yield. This represents the reaction's theoretical yield.

Now, you know that the reaction produced

0.50

moles of ammonia. This represents the reaction's actual yield.

In order to find the percent yield, you need to figure out how many moles of ammonia are actually produced for every

100

moles of ammonia that could theoretically be produced.

You know that

0.667

moles will produce

0.50

moles, so you can say that

100

moles NH

3

.

in theory

⋅

0.50 moles NH

3

.

actual

0.667

moles NH

3

.

in theory

=

75 moles NH

3

.

actual

Therefore, you can say that the reaction has a percent yield equal to

% yield = 75%

−−−−−−−−−−−−−

Consider if the reaction is conducted with 3 moles of hydrogen and 2 moles of nitrogen as it in the balanced reaction, and if only 4.1 g of ammonia is produced, then the percent yield will be 12%.

The ratio of  the actual yield to the theoretical yield multiplied by 100 is the percent yield. No simple reactions can achieve a 100 % yield.

As per the given reaction, 3 moles of hydrogen reacts with 2 moles of nitrogen and produce 2 moles of ammonia. Molar mass of ammonia is 17 g/mol. Thus, 2 moles are 34 g/mol.

Assume that if the theoretical yield is 34 g, then the percent yield for actual yield of  4.1 g is,

4.1 /34 ×100 = 12.1 %.

Now lets assume that only one mole of hydrogen is reacted here, number of moles of ammonia produced by one mole of hydrogen is :

=  1 mole × 2 mol / 3 moles

= 0.66 moles.

0.66 moles = 0.66 × 17 g/mol = 11.22 g.

For a theoretical yield of 11.22 g, the percent yield will be

= 4.1 /11.22

= 36.6 %.

Therefore, by assuming if 3 moles of hydrogen are reacted then percent yield will be 12% for 4.1 g of actual yield and 36 % if only one mole of hydrogen is reacted.

To find more on ammonia, refer here:

https://brainly.com/question/15409518

#SPJ2

Answer:

im not 2100][dskcmaln,NMCS KHJBXsjk[pl,;maxkcjxnxxxxxxxxxxxxxas'j

Explanation:

mnkc

Answer:

3400g

Explanation:

3.4×1000

3400g -_-

Answer:

D [polymers]

Explanation:

The joining of monomers (small molecules) is polymerization.

Answer:Granite forms as magma cools far under the earth's surface. Because it hardens deep underground it cools very slowly. This allows crystals of the four minerals to grow large enough to be easily seen by the naked eye. Look at the photo of granite above, notice the different crystals in the rock

Explanation:

Answer:

number of protons in the atom

Explanation:

Everything else has something to do with neutrons or weight, which you cannot know from just the atomic number. The atomic number is how many protons are in an element

Answer:

many bacteria are resistant to penicillin and other β-lactam antibiotics - some bacteria have beta-lactamase enzymes and are able to break down the antibiotics - as a result, many drugs are combined with other drugs that are β-lactamase inhibitors.

Explanation:

Quizlet

Answer:

The answer of this question is A

Answer: B is the right

Explanation:

Answer:

An allele is a variant form of a gene. Some genes have a variety of different forms, which are located at the same position, or genetic locus, on a chromosome. Humans are called diploid organisms because they have two alleles at each genetic locus, with one allele inherited from each parent.

Answer:

i dont know i do this for points

Explanation:

Answer:

Every Chlorine atom has an atomic mass of 35.45u and 17 protons and electrons.

Explanation:

this can all be figured out looking at the atomic number in the top left corner and the mass is found at the bottom.

Answer:

The first one is correct.

Explanation: Eh Are you cheating on quiz?

Answer:

pass

Explanation:

pass

Answer:

The reaction is exothermic

Explanation:

Answer:

D. 18g

Explanation:

To get the answer, we will use an equation to convert the grams of C2H5OH to moles of C2H5OH, then I will convert the moles of C2H5OH to moles of CO2, and then I will convert the moles of CO2 to grams of CO2.

9.2g C2H5OH / 46.07g C2H5OH = 0.199 mol C2H5OH

0.199 mol C2H5OH (2 mol CO2 / 1 mol C2H5OH) = 0.398 mol CO2

0.398 mol CO2 (44.01g CO2 / 1 mol CO2) = 17.515g CO2

The answer closest to our answer is answer choice D. 18g

Therefore, the answer is D

In normal temperatures, carbon dioxide is a colorless, non-flammable gas, its calculated value is "18 gram".

Equation:

[tex]\to \bold{C_2H_5OH\ (l)+3O_2\ (g) \to 2CO_2\ (g)+3H_2O\ (g)}[/tex]

In the above-given scenario, We'll utilize an equation that converts grams of ethanol to moles of ethanol, then converts moles of ethanol to moles of carbon dioxide, and finally, transforms the moles of carbon dioxide into grams of carbon dioxide to get the result.

Following are the calculation of the conversion of carbon dioxide:

[tex]\to \frac{9.2\ g\ C_2H_5OH }{46.07\ g\ C_2H_5OH} = 0.199\ mol C_2H_5OH\\\\\to 0.199\ mol\ C_2H_5OH \ (\frac{2\ mol\ CO_2}{ 1\ mol\ C_2H_5OH}) = 0.398\ mol\ CO_2\\\\\to 0.398\ mol \ CO_2 \ (\frac{44.01\ g\ CO_2}{1 \ mol\ CO_2}) = 17.515\ g\ CO_2 \approx 18\ g \ CO_2\\\\[/tex]

Therefore, the answer is "Option D".

Find out more about the CO2 here:

brainly.com/question/867804

Answer:

The killers who choose poison for killing the victim are the one who does not want to confront the victim. When a knife or a bullet is used to kill a person he may struggle and can cause harm to killer also.  

Explanation:

Poison is the most easiest way to kill a person without any struggle. The poison can be given to a person in a juice or through an injection. The poison entered in the body of victim will cause his heart to cease gradually and he will not have energy to struggle with the killer to save his life.

Explanation:

List of All Elements That Are Nonmetals

Hydrogen (sometimes)

Carbon.

Nitrogen.

Oxygen.

Phosphorus.

Sulfur.

Metals:-

Gold.

Silver.

Iron.

Copper.

Nickel.

Aluminum.

Mercury( Liquid metal)

Titanium.

Fluorine.

Answer: 130 ppm Pb

Explanation:

We use parts per million to express the concentrations of solutions that contain very, very small amounts, often called trace amounts, of a given solute.

More specifically, a solution's concentration in parts per millions tells you the number of parts of solute present for every

10

6

=

1

,

000

,

000

parts of solution. You can thus say that a

1 ppm

solution will contain exactly

1 g

of solute for every

10

6

g

of solution.

In your case, you know that you have

38

mg Pb

⋅

1 g

10

3

mg

=

3.8

⋅

10

−

2

.

g Pb

in exactly

300.0 g

=

3.000

⋅

10

2

.

g solution

This means that you can use this known composition as a conversion factor to scale up the mass of the solution to

10

6

g

10

6

g solution

⋅

3.8

⋅

10

−

2

.

g Pb

3.000

⋅

10

2

g solution

=

130 g Pb

Since this represents the mass of lead present in exactly

10

6

g

of solution, you can say that the solution has a concentration of

concentration

ppm

=

130 ppm Pb

−−−−−−−−−−−−−−−−−−−−−−−−−−−−

The answer is rounded to two sig figs, the number of sig figs you have for the mass of lead present in the sample.

A  layer represents the radiative zone which is at the centre of the cross-sectional diagram.

The layer of a star that lies just outside the core, to which radiant energy is transferred from the core in the form of photons.

In the Sun, the region between the solar core at 0.2 of the Sun's radius and the outer convection zone at 0.71 of the Sun's radius is referred to as the radiation zone, although the core is also a radiative region.

Learn more about radio active zone here:

https://brainly.com/question/16239768

#SPJ1

B

A is inner core B is outer core and there is a few other layers but from what I know looking at this the second layer has always been the radioactive zone.

If you get this right I would love brainiest

Answer:

2.268

Explanation:

5 lb × 0.45359237 = 2.26796185 kg

How to convert Pounds to Kilograms

1 pound (lb) is equal to 0.45359237 kilograms (kg).

1 lb = 0.45359237 kg

The mass m in kilograms (kg) is equal to the mass m in pounds (lb) times 0.45359237:

m(kg) = m(lb) × 0.45359237

Example

Convert 5 lb to kilograms:

m(kg) = 5 lb × 0.45359237 = 2.268 kg

Hope this helped!!!

Answer:

2.26796 kg

Explanation:

Explanation:

The terms ‘sand’ and ‘soil’ are often interchanged and used synonymously with one another. Many people consider them the same, but when scrutinized, they are quite different from each other. First and foremost, sand is a type of soil–so is silt, clay, peat, and loam. These types of soils are generated when rocks break up into their constituent parts and are acted upon by outside forces, such as wind, water, and natural salts. The broad definition of soil refers to the loose layer of earth that covers the surface of the planet. Sand, on the other hand, is defined as loose material that consists of rocks or mineral grains.

Answer:

soil is defined as the top layer of the land surface of the earth that is composed of disintegrated rock particles, humus, water, and air.

sand is defined as a loose material that consists of rocks or mineral grains.

Explanation:

Answer:

There are three main types of recycling: primary, secondary, and tertiary.Single-stream recycling is a system in which all recyclables, including newspaper, cardboard, plastic, aluminum, junk mail, etc., are placed in a single bin or cart for recycling. ... While collections costs are lower with a single stream system, processing costs are much higher.

Explanation:

Hope it helps u

FOLLOW MY ACCOUNT PLS PLS

Answer:

[tex]d=1.78\times 10^{-7}\ Dg/\mu m^3[/tex]

Explanation:

Given,

The density of Helium is [tex]1.78\times 10^4\ g/cm^3[/tex]

We need to find the density in Dg/μm

We know that,

1 g = 10 dg

1 cm³ = 10¹² μm³

So,

[tex]d=1.78 \times 10^4\ g/cm^3\\\\=1.78 \times 10^4\times \dfrac{10\ dg}{10^{12}\ \mu m^3}\\\\=1.78\times 10^{-7}\ Dg/\mu m^3[/tex]

So, the density of Helium is equal to [tex]1.78\times 10^{-7}\ Dg/\mu m^3[/tex].

Answer:

There are needed 375mL of the 2.0M BaCl₂ solution completing to 500mL with water.

Explanation:

We can find with the volume and concentration of the barium chloride the moles of BaCl₂ required. With the moles and the concentration of our stock solution we can know the volume of the 2.0M BaCl₂ solution required as follows:

Moles required:

0.500L * (1.50mol / L) = 0.750 moles BaCl₂

Volume stock solution:

0.750 moles BaCl₂ * (1L / 2.0mol) = 0.375L

Answer:

while atoms form together, they percentage their outermost electrons to create more sustainable strength states. This sharing bonds the atoms into an ionic shape or a molecule

Explanation:

i hope this help a little