Chemistry High School

Consider the combustion of pentane (C5H12)
a. Write the complete, balanced equation:

b. Determine the limiting reactant if 62.5 grams of pentane combine with 107 L of oxygen gas at STP.
c. If 54.6 L of CO2 gas is produced in the experiment, what is the percent yield?

Answers

Answer 1

Explanation:

C5H12 + 8O2 → 5CO2 +6H2O

balanced✓

stable✓

Related Questions

. What is the molarity of 5.30 moles of NaCl dissolved in 0.400 L of solution?

Answers

Answer:

13.25 M

Explanation:

Molarity is moles over liters so simply plug your values in as such:

5.30 mol ÷ 0.400 L = 13.25 M

A 1.0 liter flask contains 90.1 moles of water vapor at 27.0 oC. What is the pressure of the gas?

Answers

Answer:

The pressure of the gas is 224839.8 atm

Explanation:

As we know

PV = nRT

Substituting the given values, we get -

P * 1 L = 90.1 moles * 8.314 4621(75). J K−1 mol−1 * 300

P = 224839.8 atm

The pressure of the gas is 224839.8 atm

2 C2H6 + 7 O2 → 4 CO2 + 6 H2O How many moles of oxygen gas (O2) are needed to create EXACTLY 6 moles of Carbon dioxide(CO2)?.

Answers

صاحي يخي ب فاق . فخذ بريعهح زين

which of the following is true about these diagrams

Answers

Answer:

N/A NO DIAGRAM

Explanation:

N/A NO DIAGRAM

N/A NO DIAGRAM N/A NO DIAGRAM

N/A NO DIAGRAM

N/A NO DIAGRAM N/A NO DIAGRAM

N/A NO DIAGRAM

Graphene is made of pure _______________.

Answers

Answer:

Graphene is made of pure carbon.

Explanation:

It is a material in which the carbon atoms are arranged in a single layer, creating a honeycomb pattern. It should be stressed that this layer of carbon is only one atom thick, although some authors consider up to ten layers of carbon to be graphene.

please mark me brainliest

made of pure carbon

water will boil when...

Answers

Answer:

Explanation:

Which contains more carbon 4.71 g of C6H12O6 or 5.85 g C2H6O?

Answers

Answer:

5.85 g C2H6O has more carbon

Explanation:

Weight of carbon in 4.71 g of C6H12O6

[tex]4.71 * 12.01\\56.5671\\[/tex] grams

Weight of carbon in 5.85 g of C2H6O

[tex]5.85 * 12.01\\70.259\\[/tex] grams

Hence, 5.85 g C2H6O has more carbon

answer asap pls i give brainliest

Answers

Answer:

B. Revolution is a planet's movement around the sun causing four seasons the occur. Rotation is the spinning of the planet on its axis causing day and night.

What did Rutherford contribute to the model of the atom?

the neutron

the proton

the nucleus

the electron

Answers

Answer:

the nucleus

Explanation:

He proposed that the mass of an atom is concentrated in the nucleus which occupies a small volume in the center .He added that the nucleus comprises the protons and neutrons.where the neutron had no charge while the protons had charge of +1

Answer:

the nucleus

Explanation:

Ca(NO3)2 wht is the mass

Answers

Answer:

164.088 g/mol

Explanation: hope this helps

Answer:

Calcium nitrate

Explanation:

164.088 g/mol

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Which statement explains why carbon-14 dating cannot be used to date ancient rocks?
O Carbon-14 decays at a varying rate.
O Carbon-14 decays quickly leaving the amount too small to measure.
O Carbon-14 can be used only to date the remains of organisms.
O Carbon-14 has a half-life that is much longer than potassium.

Answers

Answer: Carbon-14 decays quickly leaving the amount too small to measure.

Explanation:

Answer:

Explanation:

i did it

9.49.8 grams of Kl is dissolved in 1.00 kg of solvent. What is the molality?

Answers

Answer:

Molality = 9.498 mol k g − 1

Explanation:

A final way to express the concentration of a solution is by its molality. The molality ( m ) of a solution is the moles of solute divided by the kilograms of solvent. A solution that contains 1.0 mol of NaCl dissolved into 1.0 kg of water is a “one-molal” solution of sodium chloride.

molality = number of moles of solute/ mass of solvent in kg

number of moles of KI = mass of KI / molar mass of KI

number of moles of KI = 9.49.8 g / 1.00 g m o l − 1

number of moles of KI = 9.498 moles

molality = 9.498 moles / 1kg

molality = 9.498 mol k g − 1

If you put a link, you will be reported.

Answers

Answer:

5ppm

Explanation:

there are 1 million (1,000,000) µg (micrograms or mcg) per g (gram) ("micro" means millionth). So, 4. 1 part per million (ppm) for a 1g sample is 1 µg or .

I know you said no links, but this is a converter that explained it much better than I know how to

http://www.endmemo.com/sconvert/ppmug_g.php#:~:text=%C2%BB%20Microgram%2Fgram%20Conversions%3A&text=ug%2Fg%E2%86%94ppm%201%20ug%2Fg%20%3D%201%20ppm

heres a screenshot of the site (since i understand links are awful)

What three temperature measurements Inust you make to calculate the specific heat of a sample using a calorimeter?

Answers

Answer:

Explanation:

Heat and temperature are two different but closely related concepts. Note that they have different units: temperature typically has units of degrees Celsius ( ∘ C ^\circ\text C ∘Cdegrees, start text, C, end text) or Kelvin ( Kstart text, K, end text), and heat has units of energy, Joules ( Jstart text, J, end text).

Please answer all of the examples below!

Answers

Answer:

The first one is balanced. The second one is not.

Explanation:

The first one is balanced because there are the same amount of elements on the reactant side as there are on the product side. The second one is not balanced because there are not the same amount of elements on the reactant side as there are on the product side. Therefore, it is not balanced

More Detailed: first example

Reactant side (left of arrow)

H: 2

C: 1

O: 3

Product side (right of arrow)

H: 2

C: 1

O: 3

More detailed: second example

Reactant side:

Na: 1

O: 1

H: 1

C: 1

Product side:

Na: 2

O: 4

H: 2

C: 1

the variables needed to balance this equation is 2,1, 1, 1.

How many grams are in 1.52 moles of PC13? (molar mass: 137.33 g/mol)

Answers

There are around 208.74 g

What is the molarity of a solution where one mole of NaOH is added to 2000mL of water

Answers

Answer:

Molarity of a solution where one mole of NaOH is added to 2000mL of water is 0.0005

Explanation:

Molarity is the equal to number of moles of solute divided by total volume of solvent

Given -

Number of moles of solute i.e NaOH = 1

Total volume of solvent i.e water = 2000 mL

Molarity [tex]\frac{1}{2000} = 0.0005[/tex]

State of matter

A gas made up of homonuclear diatomic molecules escapes through a pinhole 3.98 times as fast as oxygen gas. Write the Chemical formula of the gas.

Answers

Answer:

H₂

Explanation:

To solve this question we must find, as first, find the molar mass of the homonuclear diatomic gas using Graham's law. With the molar mass we can identify this gas

Graham's law:

[tex]\frac{V_a}{V_b} =\sqrt{\frac{m_B}{m_A} }[/tex]

Where V is the speed of the gases and m the molar mass of those:

As Va is 3.98 times Vb (And mB is molar mass of oxygen gas = 32g/mol)

[tex]3.98 =\sqrt{\frac{32g/mol}{m_A} }[/tex]

15.84 = 32g/mol / mA

mA = 2.02g/mol

As is a homonuclear diatomic gas, the molar mass of the atom is 1.01g/mol. Thus, the gas is:

H₂

R is the ideal gas constant. We know it is equal to 0.0821. What is the unit for R?
L•atm/mol K
L•atm/mol · °C
mL • atm/mol. K
L• kPa/mol - K

Answers

Answer:

A. L•atm/mol K

Explanation:

The ideal gas law equation is given as follows:

PV = nRT

Where;

P = pressure (atm)

V = volume (L)

n = number of moles (mol)

R = gas law constant

T = temperature (K)

As rightly stated in this question, R is the ideal gas constant, which can be different depending on the unit of the other components.

At STP;

V = 22.4L

P = 1 atm

T = 273 K

n = 1 mole

Hence, using PV = nRT

R = PV/nT

R = 1 × 22.4/1 × 273

R = 22.4/273

R = 0.08205

Approximately, R = 0.0821

With the units of P as atm, V as L, n as mol and T as K; R will be 0.0821 L•atm/mol K

PLEASE HELP HELP ME. THIS IS DUE TODAY PLEASE

Answers

Answer:

B, C

Explanation:

Hope it helps i read it all

A gas occupies 12.3 L at a temperature of 40.0 K. What is the volume when the temperature is increased to 60.0 K?

Answers

Answer:

the volume is 18.45 L

Explanation:

The computation of the volume when the temperature is increased to 60.0 K is shown below:

Since the gas occupied 12.3 L at a temperature of 40.0 k

And, the volume when the new temperature is 60.0 k

So, the volume is

= 60.0 k × 12.3 L ÷ 40.0 k

= 18.45 L

hence, the volume is 18.45 L

Which term identifies a type of intermolecular force?
A.
covalent bonding
B.
hydrogen bonding
C.
ionic bonding
D.
metallic bonding

Answers

Answer: B. Hydrogen Bonding

Explanation: I got it right on castle learning lol

There are different kinds of forces. The term that identifies a type of intermolecular force is hydrogen bonding.

The three known to be types of intermolecular interactions. They are

Dipole–dipole interactions London dispersion forces hydrogen bonds.

Hydrogen bonding is known to be an intermolecular force that takes place between two molecules. That molecule is known to have a hydrogen atom be bonded to a nitrogen, oxygen, or fluorine atom.

Learn more about Bond from

https://brainly.com/question/1420470

How much water should be added to 5.00 g of KCl to prepare a 0.500 m
solution? *
Molality = moles of solute
Kg of solvent
100 g
38g
500 g
134 g
Other

Answers

Answer:133.4

Explanation: Explanation:

Molarity is number of moles of solute divided by number of litres of solution.

Rearrange for V to give

Number of moles of KCl is the mass divided by the molar mass of KCl which is 75.5 g/mol, so (5/75.5) = 0.0667 moles.

Now plug in the numbers:

0.0667

0.5

0.1334

litres

So you need to add 0.1334 litres of 133.4

of water.

(NB: symbol for molarity is upper case M. m is metres).

How many grams of oxygen are present in 10g of H2 SO4?

Answers

H2SO4 molecular weight is 98g/mol.

out of 98g 64g is due to oxygen

one mole of oxygen is 32g

Then 2moles of oxygen in H2SO4.

If you want to know the mass percent of a substance in a compound.

Simple formula:

Mass percent=Mass of the substance×100/Total mass of the compound

Ex:

Mass percent of oxygen in H2SO4=mass of the oxygen ×100/Total mass of the H2SO4

(i.e 16×4×100/98=65.3061%)

Here oxygen mass is multipled by 4 because there are 4 Oxygen atoms in H2SO4.

What is the purpose of a buffer?

Answers

The main purpose of a buffer solution is just to resist the change in pH so that the pH of the solution won't be much affected when we add an acid or base into it. The added acid or base is neutralized.

Answer: A buffer solution is a solution made to prevent the pH level of something from changing when you add a base or an acid to it. For example, if you put a buffer solution in a pool, and then you put chlorine in it, the chlorine's effect on the PH level will be suppressed.

HELP!!! WILL MARK BRAINLIEST!!!
picture attached below

Answers

Answer:

0.2 cm

Explanation:

looking at the ruler, you can see that the diameter is 0.4 cm. to get the radius, just divide by two, which gets 0.2 cm as the radius

why would a farmer add calcium hydroxide to his soil

Answers

Increase the growth

Consider the following balanced equation:
3 H2 + N2 --> 2 NH3
What volume of hydrogen gas will react in a perfect ratio
with 3 liters of nitrogen gas?

Answers

Answer:

[tex]from \: avogadros \: hypothesis \\ 1 \: mole \: of \: nitrogen \: reacts \: with \: 3 \: moles \: of \: hydrogen \\ 3 \: litres \: of \: nitrogen \: react \: with \: ( \frac{3 \times 3}{1} ) \\ 9 \: litres \: of \: hydrogen[/tex]

what is the physical change of a liquid to a solid by the removal of heat?

Answers

The addition or removal of heat can cause phase transition like freezing water to ice or melting ice to water or the operation water to vapor condensation vapor to water simulation ice to vapor and the depsition vapor to ice

What are the products of the following neutralization reaction? (No need to balance)
H3PO4 + Ba(OH)2 --> ??? + ???

A.)H2O + Ba3(PO4)2
B.)H30+ + BaPO4
C.)H30+ + Ba3(PO4)2
D.)H2O + BaPO4

Answers

H3PO4 + Ba(OH)2 --> Ba3(PO4)2 + H2O

so, (A) H2O + Ba3(PO4)2 is your answer.

Other Questions

The following selected transactions relate to liabilities of Rocky Mountain Adventures. Rocky Mountain's fiscal year ends on December 31.January 13: Negotiate a revolving credit agreement with First Bank that can be renewed annually upon bank approval. The amount available under the line of credit is $10 million at the bank's prime rate.February 1: Arrange a three-month bank loan of $4.3 million with First Bank under the line of credit agreement. Interest at the prime rate of7% is payable at maturity.May 1: Pay the 7% note at maturity.Record the appropriate entries, if any, on January 13, February 1, and May 1. Crash Course US History #441. Why does John claim George H.W. Bush had the best resum of any president ever? 2. Who was the leading contender for the Democratic primary? Who ended up becoming the nominee and why was his campaign flawed? 3. What does John claim is perhaps the most important thing that happened during the 1988 presidential election? 4. Why didnt the United States support Iraqi efforts to topple the Saddam Hussein regime? 5. Despite his 89% approval rating following the Gulf War, why was Bushs reelection campaign perhaps doomed? 6. What events led to the riots of Los Angeles? 7. Describe the economic struggle America faced under Bushs presidency. 8. What was George H.W. Bushs response to the bleak economic outlook? what is basement membrane? and what is it made up of ? in detail plss help 11. The Reconstruction Act divided the south into how many Military Districts?A. 10B. 5C. 2D. 7 Describe the journey taken by sperm to get to the egg. What challenges do they face?What assistance does it receive?(Short answers please) If the cell to the right of the cell you are typing in is ________, the data can "bleed" over that cell.A. FullB. NumericalC. EmptyD. Formatted**ATTENTION** If you send me a file, or a link for something to download your answer will be reported. Please answer through text. Thank you! 3) Write 3 sentences that explain how limiting factors can change the carrying capacity ofan ecosystem? The Boxers, according to the source, were MOST focused on resisting which of these?A)Social imperialismB)Cultural imperialismEconomic imperialismD)Political imperialism 100 points / please helpA baker has three different recipes. Recipe A uses 3 cups of flour to make 12 rolls. Recipe B uses 5 cups of flour to make 24 rolls. Recipe C uses 11 cups of flour to make 48 rolls. Which recipe uses the most cups of flour per roll?a) Recipe Ab) Recipe Bc) Recipe Cd) The ratios are all proportional help please find the x A spinner has five sections labeled a,b,c,d,e. The spinner is spun 45 times What is the midpoint between (3,-1)and(7,-5) Which of the following BEST explains why Japan has a high gross domestic product when it has few natural resources?A.Japan has placed tariffs on foreign goods which allows consumers to pay lower prices because goods are produced domestically.B.Japan can purchase many goods internationally to make up for their lack of natural resources.C.Japan relies on natural resources found in the ocean to make up for its lack of resources on land.D.Japan has invested in capital goods and human resources to make it a larger producer of finished goods for trading. which of the following elements has the highest electronegativity?A) oxygenB) nitrogen C) carbonD) boron Pls help !!!! In this excerpt from the Emancipation Proclamation, which phrase or sentence supports the claim that President Lincoln did not want the slaves to take up arms against their former masters? Calculate the area of each shape below. Figures are not drawn to scale. Using an appropriately designed and analyzed study, a researcher observes a p-value of 0.010000. Consider the following propositions: PROPOSITION ONE: At the 5% significance level, the appropriate decision is to reject the null hypothesis; PROPOSITION TWO: At the 1% significance level, the appropriate decision is to reject the null hypothesis.a. PROPOSITION ONE is true and PROPOSITION TWO is trueb. PROPOSITION ONE is true and PROPOSITION TWO is falsec. PROPOSITION ONE is false and PROPOSITION TWO is trued. PROPOSITION ONE is false and PROPOSITION TWO is falsee. None of the above Help please................. Pls help with this question! Its due today! Helps are really appreciated!!

Consider the combustion of pentane (C5H12) a. Write the complete, balanced equation: b. Determine the limiting reactant if 62.5 grams of pentane combine with 107 L of oxygen gas at STP. c. If 54.6 L of CO2 gas is produced in the experiment, what is the percent yield?

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Consider the combustion of pentane (C5H12)
a. Write the complete, balanced equation:

b. Determine the limiting reactant if 62.5 grams of pentane combine with 107 L of oxygen gas at STP.
c. If 54.6 L of CO2 gas is produced in the experiment, what is the percent yield?