1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
kobusy [5.1K]
3 years ago
6

Balance the following chemical equation, then answer the following question.

Chemistry
1 answer:
julsineya [31]3 years ago
3 0
Molar mass:

O2 = 31.99 g/mol
C8H18 = 144.22 g/mol

<span>2 C8H18(g) + 25 O2(g) = 16 CO2(g) + 18 H2O(g)

2 x 144.22 g --------------- 25 x 31.99 g
10.0 g ----------------------?? ( mass of O2)

10.0 x 25 x 31.99 / 2 x 144.22 =

7997.5 / 288.44 => 27.72 g of O2

hope this helps!


</span>

You might be interested in
Cuales son los compuestos químicos inorgánicos utilizados en la formación de huesos
Ilia_Sergeevich [38]

Answer:

Explanation:

?

5 0
3 years ago
A hydrate is ​typically a crystalline compound in which water molecules are chemically bound to another compound or an element.
dedylja [7]

Answer:

Subtract the mass of the CuSO4⋅ 5H2O from the mass of CuSO4 is the right one

7 0
3 years ago
Is potassium iodide an electrolyte or nonelectrolyte?
Lera25 [3.4K]
Its a strong electrolyte!.
6 0
3 years ago
A 150.0 mL sample of an aqueous solution at 25°C contains 15.2 mg of an unknown nonelectrolyte compound. If the solution has an
inysia [295]

<u>Answer:</u> The molar mass of the unknown compound is 223.2 g/mol

<u>Explanation:</u>

To calculate the concentration of solute, we use the equation for osmotic pressure, which is:

\pi=iMRT

where,

\pi = osmotic pressure of the solution = 8.44 torr

i = Van't hoff factor = 1 (for non-electrolytes)

M = molarity of solute = ?

R = Gas constant = 62.3637\text{ L torr }mol^{-1}K^{-1}

T = temperature of the solution = 25^oC=[273+25]=298K

Putting values in above equation, we get:

8.44torr=1\times M\times 62.3637\text{ L. torr }mol^{-1}K^{-1}\times 298K\\\\M=\frac{8.44}{1\times 62.3637\times 298}=4.54\times 10^{-4}M

To calculate the molecular mass of solute, we use the equation used to calculate the molarity of solution:

\text{Molarity of the solution}=\frac{\text{Mass of solute}\times 1000}{\text{Molar mass of solute}\times \text{Volume of solution (in mL)}}

We are given:

Molarity of solution = 4.54\times 10^{-4}M

Given mass of unknown compound = 15.2 mg = 0.0152 g   (Conversion factor:  1 g = 1000 mg)

Volume of solution = 150.0 mL

Putting values in above equation, we get:

4.54\times 10^{-4}M=\frac{0.0152\times 1000}{\text{Molar mass of unknown compound}\times 150.0}\\\\\text{Molar mass of unknown compound}=\frac{0.0152\times 1000}{150.0\times 4.54\times 10^{-4}}=223.2g/mol

Hence, the molar mass of the unknown compound is 223.2 g/mol

5 0
3 years ago
Is blowing up a balloon a chemical change
Anarel [89]

Answer:

Yes

Explanation:

The combination of an acid and base causes a chemical reaction. The product is a gas, bubbles that are carbon dioxide. The carbon dioxide gas is trapped in the balloon and it inflates. The carbon dioxide gas molecules created a pressure by colliding with the sides of the balloon.

4 0
3 years ago
Other questions:
  • Chemistry Help!<br> Reasons why nonmetals form covalent bonds?
    14·2 answers
  • Why do ionic compounds conduct electric current when they are melted or dissolved in water?
    7·1 answer
  • A fossilized leaf contains 24% of its normal amount of carbon 14. how old is the fossil (to the nearest year)? use 5600 years as
    10·1 answer
  • When the equation for the combustion of ethane, C2H6, is correctly balanced, the coefficient on oxygen is:
    13·1 answer
  • How much heat energy is required to raise the temperature of 0.368 kg of copper from 23.0 ∘C to 60.0 ∘C? The specific heat of co
    14·1 answer
  • What is the value of the specific heat capacity of liquid water in j/mol·°c?
    9·2 answers
  • When biological samples of unknown origins are discovered at a crime scene, what should investigators do?a. assume no pathogens
    9·1 answer
  • Question 2<br> Describe the energy in coal and the way in which it’s converted to electrical energy.
    8·1 answer
  • Prepare indicators by using natural materials like extract of red cabbage leaves, crushed beetroot,
    9·1 answer
  • A 70.-kg person exposed to ⁹⁰Sr absorbs 6.0X10⁵ β⁻ particles, each with an energy of 8.74X10⁻¹⁴ J.(b) If the RBE is 1.0, how man
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!