how many molecules are present in a sample of carbon dioxide, CO2 with a mass of 168.2g?​

Answers

Answer 1

Answer:

2.3 X 10^24 atoms CO2

Explanation:

Answer 2

Answer:

2.30 x10²⁴ molecules CO2

Explanation:

Convert mass of CO2 to moles

Convert moles of CO2 to molecules using Avogadro's number.

168.2 g CO2 x 1 mole CO2 / 44 g CO2 x 6.022 x10²³ molecules CO2 / 1 mole CO2

= 2.30 x10²⁴ molecules CO2


Related Questions

0.32 moles of oxygen gas has a temperature of 27°C and pressure of 2 atm in a closed container. What is the volume?

Answers

Answer:

3.9 L

First convert temperature to Kelvin

then use the ideal gas law

use algebra to solve for V

Since your solving for volume, your answer should be in Liters.

State the name of the ion which is oxidised in the following half equations. Cathode: Na+ + e– → Na Anode: 2Cl– → Cl2 + 2e–

Answers

Answer:

hahahahhahhhahahaha

Explanation:

haahahahahhahahhaha

How many moles are there in 105.69 grams of FeCI2

Answers

Answer:

0.8338395752301793

Explanation:

I used an online converter (grams to moles for FeCl2)

how many carbon dioxide molecules are produced if 8.45 x 1023 of water molecules of water are produced

Answers

The given question is incomplete. The complete question is:

Determine how many carbon dioxide molecules are produced if molecules of water are produced

[tex]C_2H_6(g)+O_2 (g)\rightarrow CO2(g)+H_2O(g)[/tex]

Answer: [tex]5.60\times 10^{23}[/tex] molecules of carbon dioxide are produced

Explanation:

The balanced chemical equation is:

[tex]2C_2H_6(g)+7O_2 (g)\rightarrow 4CO2(g)+6H_2O(g)[/tex]

[tex]\text{Moles of water}=\frac{\text{given molecules}}{\text{Avogadros number}}=\frac{8.45\times 10^{23}}{6.023\\times 10^{23}}=1.40moles[/tex]

Accoding to stoichiometry:

6 moles of water are produced along with = 4 moles of carbon dioxide

Thus 1.40 moles of water are produced along with = [tex]\frac{4}{6}\times 1.40=0.93[/tex] moles of carbon dioxide

Molecules of carbon dioxide = [tex]moles\times {\text {Avogadros number}}=0.93\times 6.023\times 10^{23}=5.60\times 10^{23}[/tex]

A cube of steel with a mass of 150 grams is heated from 60°C to 150°C.
Use calorimetry to determine the amount of energy absorbed by the
metal. The specific heat capacity of steel is 0.466 J/g°C.

Answers

Answer:

1.

The energy lost by the water is given by:

where

m = 3.0 kg = 3000 g is the mass of water

Cs = 4.179 J/g•°C is the specific heat

is the change in temperature

Substituting,

2.

The energy added to the aluminium is given by:

where

m = 0.30 kg = 300 g is the mass of aluminium

Cs = 0.900 J/g•°C is the specific heat

is the change in temperature

Substituting,

4. 42.9 g

The mass of the water sample is given by

where

is the heat added

is the temperature change

Cs = 4.179 J/g•°C is the specific heat

5. 115.5 J

The heat used to heat the copper is given by:

where

m = 5.0 g is the mass of copper

Cs = 0.385 J/g•°C is the specific heat

is the change in temperature

6. 0.185 J/g•°C

The specific heat of iron is given by:

where

Q = -47 J is the heat released by the iron

m = 10.0 g is the mass of iron

is the change in temperature

Substituting,

Substituting,

Substituting,

Explanation:

If water is added to 145 mL of a 0.55 M KOH solution until the volume is 250 mL, what will the molarity of the diluted solution be?

Answers

Answer:

0.319 M

Explanation:

M1V1 = M2V2

M1 = 0.55M

V1=145 mL = 0.145 L

V2 = 250mL = 0.250L

M2 = M1V1/V2=0.55x0.145/0.250 = 0.319 M

I need someone to help me awnser is you have a min​

Answers

What do u need help with

The Moon is always half lit and half dark.
True or
False
(i know this isn’t chemistry theres no science one.)

Answers

Answer:

True

Explanation:

Just like the Earth, half of the Moon is lit by the Sun while the other half is in darkness.

Answer:

Pretty sure it's true.

On Earth, we only see part of the moon that is illuminated or not, since it revolves around the Earth. However, the sun is stationary and doesn't move, meaning that one side of the moon is always lit by the sun as it revolves around the Earth.

I will give any one Brainliest, Thanks, & a 5 rating who can Guess my Top 2 Phobia's.
I will give 1 hint for each though...
1st phobia hint is we creep & crawl everywhere we may be small but some people get scared.
2nd phobia hint is things that life is gone and no longer breathes

Answers

Answer:

scared of bugs and dead things, or death itself?

Answer:

scared of bugs and dead things, or death itself?

Explanation:

HELP ME!!!
Project: Modeling potential and kinetic energy
Assignment Summary
For this assignment, you will develop a model that shows a roller coaster cart in four different positions on a track. You will then use this model to discuss the changes in potential and kinetic energy of the cart as it moves along the track.
Background Information
The two most common forms of energy are potential energy and kinetic energy. Potential energy is the stored energy an object has due to its position. Kinetic energy is the energy an object has due to its motion. An object’s kinetic energy changes with its motion, while its potential energy changes with its position, but the total energy stays the same. If potential energy increases, then kinetic energy decreases. If potential energy decreases, then kinetic energy increases.
Potential energy related to the height of an object is called gravitational potential energy. Gravitational potential energy is directly related to an object’s mass, the acceleration due to gravity, and an object’s height.
Materials
 One poster board per student  Drawing utensils
Assignment Instructions
Step 1: Prepare for the project.
a) Read the entire Student Guide before you begin this project.
b) If anything is unclear, be sure to ask your teacher for assistance before you begin.
c) Gather the materials you will need to complete this project.
Step 2: Create your poster.
a) On the poster board, draw a roller coaster track that starts with one large hill, then is followed by a valley and another, smaller hill.
b) Draw a cart in four positions on the track as outlined below.
i. Draw the first cart at the top of the first hill. Label it A.
ii. Draw the second cart going down the first hill into the valley. Label it B.
iii. Draw the third cart at the bottom of the valley. Assume that the height of the cart in this position is zero. Label it C.
iv. Draw the last cart at the top of the second, smaller hill. Label it D.
c) Make sure that your name is on the poster. Step 3: Type one to two paragraphs that describe the energy of the cart.
a) Type one to two paragraphs describing the changes in potential and kinetic energy of the cart. Be sure to discuss how the potential and kinetic energy of the cart changes at each of the four positions along the track, and explain why these changes occur.
b) Make sure your name is on the document.
c) Later, you will submit this document through the virtual classroom.
Step 4: Evaluate your project using this checklist.
If you can check each criterion below, you are ready to submit your project.
 Did you draw a model of a roller coaster track with one large hill, a valley, and a smaller hill?
 Did you draw a cart on the track in the four required positions A–D? Did you label the cart at each of the four positions?
 Did you type a paragraph describing the changes in potential and kinetic energy of the cart at each of the four positions on the roller coaster track? Did you explain why the changes in potential and kinetic energy occur?
Step 5: Revise and submit your project.
a) If you were unable to check off all of the requirements on the checklist, go back and make sure that your project is complete.
b) When you have completed your project, submit your poster to your teacher for grading. Be sure that your name is on it.
c) Submit the typewritten document through the virtual classroom. Be sure that your name is on it.
Step 6: Clean up your work space.
a) Clean up your work space. Return any reusable materials to your teacher and throw away any trash.
b) Congratulations! You have completed your project.

Answers

Answer:

Assignment Summary

For this assignment, you will develop a model that shows a roller coaster cart in four different positions on a track. You will then use this model to discuss the changes in potential and kinetic energy of the cart as it moves along the track.

Background Information

The two most common forms of energy are potential energy and kinetic energy. Potential energy is the stored energy an object has due to its position. Kinetic energy is the energy an object has due to its motion. An object’s kinetic energy changes with its motion, while its potential energy changes with its position, but the total energy stays the same. If potential energy increases, then kinetic energy decreases. If potential energy decreases, then kinetic energy increases.

Potential energy related to the height of an object is called gravitational potential energy. Gravitational potential energy is directly related to an object’s mass, the acceleration due to gravity, and an object’s height.

Materials

 One poster board per student  Drawing utensils

Assignment Instructions

Step 1: Prepare for the project.

a) Read the entire Student Guide before you begin this project.

b) If anything is unclear, be sure to ask your teacher for assistance before you begin.

c) Gather the materials you will need to complete this project.

Step 2: Create your poster.

a) On the poster board, draw a roller coaster track that starts with one large hill, then is followed by a valley and another, smaller hill.

b) Draw a cart in four positions on the track as outlined below.

i. Draw the first cart at the top of the first hill. Label it A.

ii. Draw the second cart going down the first hill into the valley. Label it B.

iii. Draw the third cart at the bottom of the valley. Assume that the height of the cart in this position is zero. Label it C.

iv. Draw the last cart at the top of the second, smaller hill. Label it D.

c) Make sure that your name is on the poster. Step 3: Type one to two paragraphs that describe the energy of the cart.

a) Type one to two paragraphs describing the changes in potential and kinetic energy of the cart. Be sure to discuss how the potential and kinetic energy of the cart changes at each of the four positions along the track, and explain why these changes occur.

b) Make sure your name is on the document.

c) Later, you will submit this document through the virtual classroom.

Step 4: Evaluate your project using this checklist.

If you can check each criterion below, you are ready to submit your project.

 Did you draw a model of a roller coaster track with one large hill, a valley, and a smaller hill?

 Did you draw a cart on the track in the four required positions A–D? Did you label the cart at each of the four positions?

 Did you type a paragraph describing the changes in potential and kinetic energy of the cart at each of the four positions on the roller coaster track? Did you explain why the changes in potential and kinetic energy occur?

Step 5: Revise and submit your project.

a) If you were unable to check off all of the requirements on the checklist, go back and make sure that your project is complete.

b) When you have completed your project, submit your poster to your teacher for grading. Be sure that your name is on it.

c) Submit the typewritten document through the virtual classroom. Be sure that your name is on it.

Step 6: Clean up your work space.

a) Clean up your work space. Return any reusable materials to your teacher and throw away any trash.

b) Congratulations! You have completed your project.

Explanation:

Ms. Gratz went outside last night and saw a full moon as shown:
Which moon phase would she see next?

Answers

right now is waning gibbous on march 7 is waning crescent

Which objects have the most eccentric orbits?

Answers

It’s Mercury
Hope this helps

What mass of iron is formed when 240 g of iron(III) oxide reacts completely with carbon monoxide?

Answers

Answer:

168 g

Reaction:

[tex]Fe_{2}O_{3} + 3 CO >>> 2 Fe + 3CO_{2}[/tex]

Explanation:

First we need to figure out what is the formula mass (Mr) of Fe2O3 (Iron(III) oxide).

The atomic mass of Fe=56, O=16

Mr= 56+56+16+16+16=160 g/mol

We can now figure out the moles of the iron:

240/160 = 1.5 mol

Then we need to find the ratio to make Fe.

In the reaction, we know that 1 mole of Fe2O3 can make 2 moles of Fe. So 1.5 moles of Fe2O3 can make 3 moles of Fe.

And then we need to find the mass of the Fe.

3×56=168 g.

Hence 168g of the iron is made after the reaction.

write a detailed paragraph about how a volcano is formed. be sure to
include how density, convection currents, and plate tectonics all come
together to make a volcano.

Answers

Answer:

okay but give me brainliest

Explanation:

A volcano is formed when hot molten rock, ash and gases escape from an opening in the Earth's surface. The molten rock and ash solidify as they cool, forming the distinctive volcano shape shown here. As a volcano erupts, it spills lava that flows downslope. Volcanic flows are called lahars.

How many molecules are in 1 mole of molecules?

Answers

Avogadro's Number and the Mole. The mole is represented by Avogadro's number, which is 6.022×1023 atoms or molecules per mol.

Answer:

6.022x10^23

Explanation:

Increasing the amount of current flowing through a wire strengthens
what?
magnetic field
electromagnetism
solenoid
O polarity

Answers

Answer:

It will strengthen Electromagnetism

HELP ME PLZ!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
What happens when something reaches absolute zero?
Question 5 options:

1)There are no particles left in it

2)The particles completely stop moving

3)The particles are vibrating at a rate greater than the speed of light

4)There is no such thing as absolute zero

Answers

Answer:

There's no such thing as absolute zero

Answer:

I think number 1 but if wrong report me

What is the mass percent of carbon in glucose, C6H1206?

Answers

40.0 percent i hope im right pretty sure it is

Answer:

40%

Explanation:

hope this helps!!!!

How many grams are there in 9.03 x 1023 molecules of CO2?

Answers

Answer:

The correct answer is - 66g.

Explanation:

Given:

molecules of CO2 = 9.03 x 10^23

We know:

1 mole of any substance = 6.02x10^23 molecules. (Avogadro's number)

M (CO2) = 12 + (2x16) = 12 + 32 = 44g

Solution:

The mass of CO2 with 9.03x10^23 molecules would be:

44g of CO2 = 6.02x10^23 molecules.

So, the mass in grams of CO2 (X) = 9.03x10^23 molecules

Xg of CO2 = (44x9.03x10^23)/6.02x10^23 = 66g

Thus, the correct answer would be - 66gm.

HELP PLEASE!! IF YOU DO AND ANSWER CORRECTLY YOU WILL GET A BRAINLIEST 5 STARSSSS AND A THANKS!! PLEASE PLEASE HELPPP
When scientists communicate about their work, what information should they make sure is included:
1.
2.
3.
4.
5.
6.
7.

Answers

1.) publish a journal that is verified by other scientists
2.) present at conferences
3.) present at universities
4.) inform popular media’s
5.) show data
6.) show hypothesis
7.) and give a theory

1. The multiplicative inverse of 5/9 is.....
a-9/5
b-9/5
c-3/9
d-None of these​

Answers

Answer:

None of these cause the correct answer is 9/-5

The Answer Is None Of These
But The Answer Is -5/9

Calculate how many molecules are in 25.1 grams of N2.

answer choices:

1. 1.08 x 10^24 molecules N2

2. 6.02 x 10^23 molecules N2

3. 6.31 x 10^22 molecules N2

4. 5.39 x 10^23 molecules N2

Answers

1. 1.08 x 10^24 molecules N2

what is the correct terms for atom with a full valence shell?​

Answers

Answer:

octet rule

Explanation:

Your car burns gasoline as you drive from home to school

Answers

yes,sr8 facts, mhm, agree
well ya? how else would it

a 31 g sample of a compound that contained only

Answers

The question is incomplete, the complete question is;

A 31 g sample of a compound that contains only the elements C,H and N is completely burned in O2 to produce 44.0 g of CO2, 45.0 g of H2O, and 92.0 g of NO2. Determine the empirical formula of the compound.

Answer:

CH5N2

Explanation:.

Mass of C = 44.0g/44.0 g/mol = 1 mol * 1 = 1 mole of C

Mass of H = 45.0 g/18 g/mol = 2.5 moles * 2  = 5 moles of H

Mass of N = 92.0 g/46 g/mol = 2 moles * 1 = 2  moles of N

Dividing through by the lowest mole ratio;

1/1, 5/1, 2/1

1 : 5 : 2

Hence the empirical formula is;

CH5N2

Unicellular organisms are so small that you usually need a telescope to see them.

True
False

Answers

Answer:

true ........

hope it is helpful

HELP ME PLEASEEEEE!!!!!!!!!!

Answers

Answer:

I dont know what the answer is

Explanation:

The answer is c because a acid when an acid is dissolved in water, the balance between hydrogen ions and hydroxide ions is shifted. Now there are more hydrogen ions than hydroxide ions in the solution. This kind of solution is acidic.


When you push or pull something, you are creating

Answers

force but could be tension

Which formula represents a hydrate compound?​

Answers

Answer:

H2O2

Explanation:

There's hydrogen and ox in the formula to represent

Which of the following could be an empirical formula? a C2H4 b C4H10 c N2O4 d BaO2

Answers

Answer:

B C4H10 will be the empirical formulae.

Nothing because nothing is good
Other Questions
Preparing for University StudiesCreate a brochure in Spanish to advise fellow students on what they need to do to prepare for university life. The text for your brochure should use affirmative and negative t commands about selecting and applying to a university, and all the things that students will need to do once they move to the university. Also include some relevant images to support your copy. URGET! Please make a sentence for each word and the English definition!La sala de esperaEl hallEl distribuidor automatico El horarioEl billete (boleto)La tarifaEl quioscoLos libros de bolsilloLas revistasLos periodicosEl vagon, el cocheEl andenLa via Give examples which indicate that nylon fibres are very strong. the slope of a line parallel to the line who is the equation 2x + y = 6 Jason collected 40 postcards. Of these, 16 were from foreign countries. What percent were from foreign countries? % GUYS THERE ARE CURRENTLY MULTIPLE SCAMMERS SWARMING BRAINLY JUST WAIT UNTIL THE BRAINLY TEAM HANDLES THIS WE CAN BEAT THIS WAVE Financial advisors recommend putting 20% of your earnings into savings. If aperson saves $700, how much did they earn? The graph below shows the relationship between pH and three different digestive enzymes. Which of the following conclusions can be drawn from this graph? A. Digestive enzymes are most active in an environment with a pH of 7. B. Enzymes operate most efficiently within a certain range of temperatures. C. Enzymes are only able to operate in acidic environments. D. Each enzyme operates best within a certain pH range. How do you find a slope and the Y intercept A drawing has a scale of 1 : 40 On the drawing, a kitchen is a rectangle measuring 14cm by 22cm.A bedroom has an actual area of 500,000 cm ^2.How much smaller,in cm^2 is the kitchen than the bedroom ? Please find the measure of angle PQS Why does sodium and potassium ions need a protein pump to pass through the cell membrane?A. The ions have a charge and cannot pass directly through the cell membrane.B. The ions are moving against the concentration gradient.C. Energy is needed to move the ions.D. All of the above. In agriculture, terraces like the ones shown in this photograph are used to grow crops in areas with high elevations such as-A) JapanB) KenyaC) Somalia.D)Australia what must be multiplied to 3x + 7y to get 9x - 49y?help. What is Anti-Semitism, and how did it affect Jewish people before 1933 and after? Did Anti-Semitism play a role in the Holocaust genocide? Read the passage from Rivers and Stories, Part 1.O great Lord Danubethe blood of the white townIs flowing in your veinsIf you love it get up a momentFrom your bed of loveRide on the largest carpPierce the leaden cloudsAnd come visit your heavenly birthplaceBring gifts to the white townThe fruits and birds and flowers of paradiseThe bell towers will bow down to youAnd the streets prostrate themselvesO great Lord DanubeWhat are the authors purposes for including this poem?Select all that apply.-to inform readers about rivers and to persuade them to try writing their own poetry about rivers-to persuade readers that rivers have a unique beauty-to entertain readers with poetic description of a river-to inform readers that rivers have a long history of being mentioned in poetry Lenguaje msica III B) Clasificar los intervalos (mayores, menores y justos)me ayudas please help and put some good a** music ill give brainliest George is required to produce 500 frames for an art gallery. He spent $100 on the wood required for all these frames. He also spent $50 in polishing all the final frames. He rented two floors of an art gallery for about $700. What selling price should George charge the art gallery if he wants to break even? What is a commonly used medicine that is taken when a patient has a cold (answer can be very vague.)