If 4.74 g of propane is allowed to completely combust, calculate the mass of carbon dioxide formed at the end. Remember the units

Answers

Answer 1

Answer:

14.2g

Explanation:

The reaction expression is given as:

        C₃H₈  +  5O₂ → 3CO₂ + 4H₂O

Given mass of propane combusted;

   4.74g

Unknown:

Mass of carbon dioxide produced  = ?

Solution:

To solve this problem, we find the number of moles of the given propane;

   Number of moles  = [tex]\frac{mass}{molar mass}[/tex]  

Molar mass of C₃H₈ = 3(12) + 8(1) = 44g/mol

   Number of moles  = [tex]\frac{4.74}{44}[/tex]  = 0.11mol

From the balanced reaction equation:

          1 mole of C₃H₈ will produce  3 moles of CO₂

          0.11mole of C₃H₈ will produce 3 x 0.11  = 0.33mole of  CO₂

Mass of  CO₂ = number of moles x molar mass

    Molar mass of  CO₂ = 12 + 2(16) = 44g/mol

Mass of  CO₂ = 0.33 x 44  = 14.2g


Related Questions

would you like to explore outer space? Why or why not? If you could travel to any part of the galaxy at lightning speed would like to see what is truly out in the universe would you do it? Why or why not?

Answers

Answer:

Yes!

Explanation:

I think It would be fun!, Going thought space going from planet to planet. once i get back to earth i can make a document about my time in space.

q=m(delta)T Calculate the final temperature reached when 324 J of heat is added to a 22.5g iron bar initially at 20.0 degrees C. The specific heat capacity of iron is 0.45 J/g degrees C.

Answers

Answer:

T(final) = 52°C

Explanation:

1st, you need to correct your heat flow formula => q = mcΔT.

m = 22.5g

c = 0.45 j/g·°C

ΔT = T(final) - T(initial) = T(final) - 20°C

q = (22.5g)(0.45j/g·°C)((final) - 20°C) = 324j

=> T(final) = [324j/(22.5g)(0.45j/g·°C)] + 20°C = 52°C

An object with a mass of 20.0 kg has a force of 5.0 Newton's applied to it. What is the resulting acceleration of the object?

Answers

love the toradora pfp, also the answer to your question is...

answer: from newtons second law of motion,
F=ma hence,
F=20N
m=5kg so,
20=5×a
a=4m/s^2

Determine the acid dissociation constant for a 0.010 M nitrous acid (HNO2) solution that has a pH of 2.70. Nitrous acid is a weak monoprotic acid and the equilibrium equation of interest is:________

Answers

Answer:

HNO₂ ⇄ H⁺ + NO₂⁻

Ka = 4.0 × 10⁻⁴

Explanation:

Step 1: Given data

Concentration of nitrous acid (Ca): 0.010 MpH of the solution: 2.70

Step 2: Write the acid dissociation reaction

Nitrous acid is a weak acid that dissociates according to the following expression.

HNO₂ ⇄ H⁺ + NO₂⁻

Step 3: Calculate the concentration of H⁺

We will use the definition of pH.

pH = -log [H⁺]

[H⁺] = antilog - pH = antilog -2.70 = 2.00 × 10⁻³ M

Step 4: Calculate the acid dissociation constant (Ka)

For a weak acid, we can calculate Ka using the following expression.

Ka = [H⁺]²/Ca

Ka = (2.00 × 10⁻³)²/0.010

Ka = 4.0 × 10⁻⁴

Which of the following is an example of a carnivore?
A. human
B. giraffe
C. elephant
D. lion

Answers

Answer:

D, Lions

Explanation:

Lions are meat eaters, meaning their food and energy requirements derive solely from anima tissue or meat (whether from hunting or scavenging)

Liquid 1 has a density of 2.0 g/ml, Liquid 2
has a density of 1.5 g/ml, and Liquid 3 has a density of 1.8 g/ml. Which liquidwill make up
the top layer?

Answers

Liquid 2 because the lower the density the more it floats and the higher the density the more it sinks. The order from top to bottom is liquid 2, liquid 3, liquid 1

A student drew a diagram of the quantum model of an atom, as shown.


A small circle is shown. Six light gray spheres and six dark gray spheres are shown inside the circle. On the outer side of the circle is another circle of larger radius. This circle has two small circle on its boundary. Another circle of even greater radius is on the outside of the second circle. This outermost circle has four small circles on its boundary.


Which of the following explains if the student's diagram is correct or incorrect?


A - The diagram is incorrect because electrons follow an elliptical path instead of a circular path.

B - The diagram is incorrect because the exact location of the electrons cannot be determined.

C - The diagram is correct because protons and neutrons are concentrated at the center of the atom.

D - The diagram is correct because electrons are present in distinct energy levels around the nucleus.

Answers

The diagram is correct because electrons are present in distinct energy levels around the nucleus. Option D

What is the quantum model?

Let nus just take a minute to be able to remind ourselves that when we look at the atom that there are several subatomic particles that can be shown to be able to make up the atom. We know that the electron is the particle that can be shown to be arranged in shells.

What we saw in the inner or the core of the atom is the nucleus and the six grey spheres  that we can see there would have to do with the nucleus of the atom that is in the question.

As we now look up at the shells, we can see the electrons as they have been arranged into the respective shells were they can be found in the atom on the basis of the energy that they possess.

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What is the structure of amylopectin?

Answers

Answer:

Not sure if you just wanted the basic structure or full on structure.

Explanation:

Type your answer in decimal form. Do not round.
7 days = hours

Answers

168.0
Hope this helps u
Explanation:
Solar day:
1

day

=
24
h

7

day
=
7

24
h
=
168
h

Stellar day:
1

day

=

23

hours

56

minutes

and

4.1

seconds

=

Th ph value of milk is close to

Answers

Answer:

6.5

Explanation:

HElp me plzzzzz??????

Answers

Answer:

The answer to your question is given below

Explanation:

We'll begin by writing the balanced equation for the reaction. This is illustrated below:

Zn + 2HCl —> ZnCl2 + H2

Thus, we can write out the atoms present in both the reactant and the product by doing a simple head count. The atoms present are listed below:

Element >>> Reactant >>> Product

Zn >>>>>>>> 1 >>>>>>>>>> 1

H >>>>>>>>> 2 >>>>>>>>> 2

Cl >>>>>>>>> 2 >>>>>>>>> 2

Calculate the lithium ion (Li+) concentration for a 0.821 M Li2S solution.

Answers

The lithium ion[Li⁺]=1.642 M

Further explanation

Ionic compounds will dissociate into ions when dissolved in water. The strength of the dissociation depends on the strength of the electrolyte properties. The stronger it is, the more ions will dissociate

Reaction

Li₂S⇒2Li⁺+S²⁻

mol ratio Li₂S : Li⁺: S²⁻ = 1 : 2 : 1

so the lithium-ion (Li⁺) concentration :

[tex]\tt 2\times 0.821=1.642~M[/tex]

Write a decay equation for neon-19

Answers

Answer:

Neon

Mass Number Half-life Decay Mode

Electron Capture

Electron Capture with delayed Proton Emission

18 1.6670 seconds Electron Capture

19 17.22 seconds Electron Capture

What type of particles move to create electicity?
electrons
protons
neutrons

Answers

the answer is electrons.....

Answer:

electrons

Explanation:

28 mL of 0.10 M HCl is added to 60.0 mL of 0.10 M Sr(OH)2. Determine the concentration of OHin the resulting solution.

Answers

Answer:

Explanation:

Sr(OH)₂.+ 2HCl = SrCl₂ + 2H₂O

Moles of HCl in 28mL of .10 M HCl = .028 x .1 = .0028 moles .

Moles of Sr(OH)₂ in 60mL of .10 M Sr(OH)₂ = .060 x .1 = .0060 moles

2 moles of HCl  reacts with 1 mole of Sr(OH)₂

.0028 moles of HCl  reacts with .0014  mole of Sr(OH)₂

moles of Sr(OH)₂ remaining = .0060 - .0014 = .0046 moles .

Sr(OH)₂  = Sr⁺  +  2OH⁻

1 mole                  2 mole

.0046                    .0092

Total volume of solution = 88 mL .

88 mL of solution contains .0092 moles of OH⁻

concentration of OH⁻ = .0092 / .088

= .1045 M  .

When Strontium hydroxide, Sr(OH)₂ will react with hydrochloric acid (HCl) then the reaction formed will be:

Sr(OH)₂+ 2 HCl ⇒ SrCl₂ + 2 H₂O

The concentration of OH in the resulting solution will be 0.1045 M.

This can be calculated by:

Molarity (HCl) = 0.10 M

Volume (HCl) = 28 mL

Molarity (Sr(OH)₂) = 0.10 M

Volume (Sr(OH)₂) = 60.0 mL

[tex]\text{Molarity} = \dfrac{\text{moles}}{\text{volume of the solution in litres}}[/tex]

Moles of HCl = 0.028 x 0.1 = 0.0028 moles

Moles of Sr(OH)₂ =  0.060 x 0.1 = 0.0060 moles

2 moles of hydrochloric acid will react with 1 mole of Sr(OH)₂

So, 0.0028 moles of HCl will react with 0.0014 mole of Sr(OH)₂

Remaining moles of Sr(OH)₂  = 0.0060 - 0.0014 = 0.0046 moles

Sr(OH)₂   ⇒   Sr⁺ + 2OH⁻

1 mole                    2 mole

0.0046                  0.0092

Total volume of solution = 88 mL

88 mL of solution contains 0.0092 moles of OH⁻

Hence, concentration of OH⁻ :

[tex]= \dfrac{0.0092 }{0.088}[/tex]

= 0.1045 M

Therefore, 0.1045 M will be the concentration of OH in the solution.

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6.At a pressure of 5.0 atmospheres, a sample of gas occupies 40 liters. What volume
will the same sample occupy at 1.0 atmosphere?
(a) 50 L
(b) 100 L
O (C) 80 L
(d) 200 L

Answers

Answer:

The answer is 200 L

Explanation:

The new volume can be found by using the formula for Boyle's law which is

[tex]P_1V_1 = P_2V_2[/tex]

where

P1 is the initial pressure

P2 is the final pressure

V1 is the initial volume

V2 is the final volume

Since we are finding the new volume

[tex]V_2 = \frac{P_1V_1}{P_2} \\[/tex]

So we have

[tex]V_2 = \frac{5 \times 40}{1} \\ = 5 \times 40[/tex]

We have the final answer as

200 L

Hope this helps you

23.1 G Of HCI (a Strong Acid) Is Added To Water To Make 1250 ML Of Solution.

Answers

Answer:

[H₃O⁺] = 0.0507 M

pH = 1.29

Explanation:

23.1 g of HCI (a strong acid) is added to water to make 1250 mL of solution. Calculate [H₃O⁺] and pH of the solution.

Step 1: Given data

Mass of HCl (solute): 23.1 gVolume of solution: 1250 mL

Step 2: Calculate the concentration of HCl

We will use the following expression.

[HCl] = mass HCl / molar mass HCl × liters of solution

[HCl] = 2.31 g / 36.46 g/mol × 1.250 L

[HCl] = 0.0507 M

Step 3: Calculate the concentration of H₃O⁺

HCl is a strong acid according to the following equation.

HCl(aq) + H₂O(l) ⇒ H₃O⁺(aq) + Cl⁻(aq)

The molar ratio of HCl to H₃O⁺ is 1:1. Then, [H₃O⁺] = 0.0507 M.

Step 4: Calculate the pH of the solution

We will use the following expression.

pH = -log [H₃O⁺]

pH = -log 0.0507

pH = 1.29

Describe what a limiting reactant is

Answers

Answer:

The reactant in a chemical reaction that limits the amount of product that can be formed. The reaction will stop when all of the limiting reactant is consumed. Excess Reactant - The reactant in a chemical reaction that remains when a reaction stops when the limiting reactant is completely consumed.

Explanation:

A 25.225 g sample of aqueous waste leaving a fertilizer manufacturer contains ammonia. The sample is diluted with 75.815 g of water. A 14.842 g aliquot of this solution is then titrated with 0.1068 M HCl . It required 29.99 mL of the HCl solution to reach the methyl red endpoint. Calculate the weight percent NH3 in the aqueous waste

Answers

Answer:

1.43 (w/w %)

Explanation:

HCl reacts with NH3 as follows:

HCl + NH3 → NH4+ + Cl-

1 mole of HCl reacts per mole of ammonia.

Mass of NH3 is obtained as follows:

Moles HCl:

0.02999L * (0.1068mol / L) = 3.203x10-3 moles HCl = Moles NH3

Mass NH3 in the aliquot:

3.203x10-3 moles NH3 * (17.031g / mol) = 0.0545g.

Mass of sample + water = 22.225g + 75.815g = 98.04g

Dilution factor: 98.04g / 14.842g = 6.6056

That means mass of NH3 in the sample is:

0.0545g * 6.6056 = 0.36g NH3

Weight percent is:

0.36g NH3 / 25.225g * 100

1.43 (w/w %)

Question 4 of 5
Most paints include a pigment (the color), a binder (the
glue), and a solvent. The binder makes the paint color stick
to the surface being painted.
Which part of the manufacturing process occurs when binders are added to a
paint mixture?
A. Separating
B. Forming
C. Finishing
D. Combining
SUE

Answers

Answer:

answer is d Combining

Explanation:

I did the test and got it correct

As a chemical change takes place when binders are added to a paint mixture combining part of the manufacturing process occurs.

What are chemical changes?

Chemical changes are defined as changes which occur when a substance combines with another substance to form a new substance.Alternatively, when a substance breaks down or decomposes to give new substances it is also considered to be a chemical change.

There are several characteristics of chemical changes like change in color, change in state , change in odor and change in composition . During chemical change there is also formation of precipitate an insoluble mass of substance or even evolution of gases.

There are three types of chemical changes:

1) inorganic changes

2)organic changes

3) biochemical changes

During chemical changes atoms are rearranged and changes are accompanied by an energy change as new substances are formed.

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Based on what you have seen in this gizmo what is the best definition of the doppler effect?

Answers

Answer:

Based on what you have seen in the Doppler Effect Gizmo, what is the best definition of the Doppler effect? A change in the frequency of a wave caused by the motion of the source relative to the observer. The increase in volume of a sound as the source approaches an observer.

Explanation:

What is the molar ratio of Li to N2 in the given reaction?

6Li + N2 → 2Li3N

Answers

Answer:

6moles of Li : 1 mole of N₂

Explanation:

The reaction equation is given as:

        6Li   +   N₂  →   2Li₃N

Mole ratio of Li to N₂;

 

From the balanced reaction equation:

    6 moles of Li will react with 1 mole of N₂;

The mole ratio is:

      6moles of Li : 1 mole of N₂

What is the compound NH3

Answers

Ammonia is the compound NH3

How much heat is required to vaporize 15.8 g CH3OH(l) at its boiling point? (∆Hvap = 38.0 kJ/mol) a a. 2.41 kJ b 77.0 kJ c 18.8 kJ d 600. kJ

Answers

Answer:

be.77.0kj.

Explanation:

add moles then times

Considering the definition of enthalpy of vaporization,  the correct answer is option c. the heat required to vaporize 15.8 g of CH₃OH at its boiling point is 18.8 kJ.

When a material changes phase from solid to liquid, or from liquid to gas, a certain amount of energy is involved in this phase change.

In case of phase change from liquid to gas, this amount of energy is known as enthalpy of vaporization (symbolized as ∆H vap), also known as (latent) heat of vaporization or heat of evaporation.

In other words, the enthalpy of vaporization is the amount of energy required to change a unit of mass (for example, moles or kg) of a substance from phase liquid to phase gas at constant temperature and pressure.

In this case, you know that enthalpy of vaporization is ∆Hvap = 38.0 kJ/mol.

On the other side, you want to vaporize 15.8 g of CH₃OH.  Then, being the molar mass of the compound 32 g / mole (that is, the amount of mass contained in one mole), the number of moles to be vaporized is:

[tex]15.8 gramsx\frac{1 mol}{32 grams}= 0.49375 moles[/tex]

Then, the heat required to vaporize 0.49375 moles of CH₃OH at its boiling point is calculated taking into account the enthalpy of vaporization by:

0.49375 moles×  38.0 kJ/mol= 18.76 kJ ≅ 18.8 kJ

Finally, the correct answer is option c. the heat required to vaporize 15.8 g of CH₃OH at its boiling point is 18.8 kJ.

Learn more:

https://brainly.com/question/21655944?referrer=searchResultshttps://brainly.com/question/7580155?referrer=searchResultshttps://brainly.com/question/4035699?referrer=searchResultshttps://brainly.com/question/11475740https://brainly.com/question/2212655?referrer=searchResults

CH3
CH,CCHCHCHCl
OH
Spell out the full name of the compound.

Answers

Answer:

CH3 – CH – CH – CH2 – CH – CH3

| | |

CH3 CH2 CH3

|

CH3

Explanation:

3 - etil - 2, 5 - dimetilhexano

can you help me out pleas​

Answers

Answer:a a atom

Explanation:

Answer:

a. carbon

b. atomic number

c. mass number

d. 6

e. 7

f. 8

pls mark as brainliest

How many mL of 0.650 M solution can be prepared by dissolving 15.0 g of copper(II) nitrate in
water?

Answers

Answer:

123.1L

Explanation:

Given parameters:

Molarity of Cu(NO₃)₂  = 0.650M

Mass of  Cu(NO₃)₂ = 15g

Unknown:

Volume of  Cu(NO₃)₂ = ?

Solution:

To solve this problem, we have to first find the number of moles of the given mass;

  Number of moles of Cu(NO₃)₂  = [tex]\frac{mass}{molar mass}[/tex]

   Molar mass of Cu(NO₃)₂  = 63.5 + 2 (14 + 3(16)) = 187.5g/mol

 Number of moles of Cu(NO₃)₂  = [tex]\frac{15}{187.5}[/tex]  = 0.08 mol

Molarity is given as;

  Molarity  = [tex]\frac{number of moles }{volume}[/tex]  

         Volume  = [tex]\frac{number of moles }{molarity }[/tex]  

  Insert the parameters and solve;

        Volume  = [tex]\frac{0.08}{0.65}[/tex]  = 0.12L

Now mL;

         1L  = 1000mL

        0.12L will give 1000 x 0.12  = 123.1L

A sample of vinegar containing 0.100 mol of ethanoic acid has a concentration of 0.125M of ethanoic acid. What is the volume of the solution.

Answers

Answer:

0.8 L

Explanation:

We are given:

Molarity of Ethanoic Acid in vinegar = 0.125 M

Number of moles of Ethanoic Acid = 0.1 mole

Finding the volume of the solution:

We know that the molarity of a solution is defined as:

Molarity = n / V   (where n is the number of moles and V is the volume in L)

replacing the variables with the given values:

0.125 = 0.1 / V

Multiplying by V on both the sides

0.125V = 0.1

Dividing both sides by 0.125

V = 0.1 / 0.125

V = 0.8 L

Therefore, the volume of the solution is 0.8 L

what is the missing value​

Answers

Answer:

72

Explanation:

The pattern here may be hard to find at first, but it's this: the number in the middle of the triangle = (number at lower left corner of triangle x number at upper vertex of triangle) + (number at upper vertex of triangle x number at lower right corner of triangle).

Thus, for the missing value...

Missing value = (3x8) + (8x6) = 24+48 = 72.

Could you tell me what concept in chemistry relates to this? I'm interested.

Also check out stylesben's answer. Seems like there's several ways of doing this.

Answer:

the answer is 72

Explanation:

6+3=9 and multiply 9 with 8 and answer comes 72

Please show work: A car travels at a rate of 65 miles per hour. If the car gets 33.5 miles to the gallon, how many hours can a car travel on 25.0 pounds of fuel? (density of fuel is 6.50 pounds/gallon)

Answers

Answer:

Explanation:

First divide 25.0 by 6.5 to get the amount of fuel you have.  

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