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
Aleksandr-060686 [28]
2 years ago
9

New concept cars in the Detroit Auto Show feature engines that burn hydrogen gas in air to produce water vapor. Suppose that fue

l tank contains 150. L of H2 gas at 20.0 atm pressure at 25.0˚C. If all of this gas is burned, what mass (in grams) of water vapor is produced?
Chemistry
1 answer:
Maksim231197 [3]2 years ago
3 0

Answer:

247.2g

Explanation:

Using the general gas law equation as follows:

PV = nRT

Where;

P = pressure (atm)

V = volume (L)

n = number of moles (mol)

R = gas law constant (0.0821 Latm/molK)

T = temperature (K)

According to the information in this question, a fuel tank contains 150. L (V) of H2 gas at 20.0 atm (P) at 25.0˚C (T)

Temperature = 25°C = 25 + 273 = 298K

Using PV = nRT

20 × 150 = n × 0.0821 × 298

3000 = 24.4658n

n = 3000/24.4658

n = 122.62

n = 122.6mol

Using the formula, mole = mass/molar mass, to find the mass of H2 gas.

Molar mass of H2 = 1.008(2)

= 2.016g/mol

122.6 = mass/2.016

mass = 122.6 × 2.016

mass = 247.2g.

You might be interested in
How many orbitals are in Phosphorus
Viefleur [7K]

Answer:

3

three half-filled orbitals each capable of forming a single covalent Bond and an additional lone - pair of electrons

8 0
2 years ago
Read 2 more answers
What is the Einstein theory of relevancy
Alinara [238K]
E=mc (square) E= mass times capacity squared
7 0
3 years ago
What is the pH of an HCL solution if [H+]=0.03​
I am Lyosha [343]

Answer:

pH = 1.5

Explanation:

The pH is always equal to -log[H+].

Simply plug it into this formula to find the pH. In order to find the concentration from the pH, you can do:

10^{-pH} = [H+]

4 0
2 years ago
Read 2 more answers
What is the mass of 0.5 moles of NaCl
Debora [2.8K]

Answer:

29.25g

Explanation:

m=0.5×(23+35.5)

6 0
2 years ago
Read 2 more answers
A 2.00L flask was filled with 4.00 mol of HI at a certain temperature and given sufficient time to react. At equilibrium the con
inn [45]

Answer:

The equilibrium concentration of I₂ is 0.400 M  and HI is 1.20 M, the Keq will be 0.112.

Explanation:

Based on the given information, the equilibrium reaction will be,  

2HI (g) ⇔ H₂ (g) + I₂ (g)

It is given that 4.00 mol of HI was filled in a flask of 2.00 L, thus, the concentration of HI will be,  

= 4.00 mol/2.00 L

= 2.00 mol/L

Based on the reaction, the initial concentration of 2HI is 2.00, H₂ is 0 and I₂ is O. The change in the concentration of 2HI is -x, H₂ is x and I₂ is x. The equilibrium concentration of 2HI will be 0.200-x, H₂ is x and I₂ is x.  

It is given that at equilibrium, the concentration of H₂ or x is 0.400 M.  

Now the equilibrium concentration of HI will be,  

= 2.00 -2x  

= 2.00 - 2 × 0.400

= 1.20 M

The equilibrium concentration of I₂ will be,  

I₂ = x  

= 0.400 M

The equilibrium constant (Keq) will be,  

Keq = [H₂] [I₂] / [HI]²

= (0.400) (0.400) / (1.20)²

= 0.112

Thus, the Keq of the reaction will be 0.112.  

5 0
3 years ago
Other questions:
  • How much potassium iodide (76.45% i ) should be consumed to meet the rda?
    14·1 answer
  • Which group of elements is characterized as having little to no reactivity? Halogens
    14·2 answers
  • Which larger potassium or Argon?
    10·1 answer
  • What are the types of radioactive rays that can be produced during a radioactive decay?
    14·1 answer
  • Enter a chemical equation for NaOH(aq) showing how it is an acid or a base according to the Arrhenius definition. Consider that
    6·1 answer
  • A mole of Big Macs stacked would reach from the earth to the moon and back how many times?
    5·1 answer
  • Like a greenhouse gas, clouds can trap heat emitted from the earth's surface.
    12·2 answers
  • If the amount of radioactive sodium-24, used for studies of electrolytes within the body, in a sample decreases from 0.8 to 0.2
    12·1 answer
  • If there are 2.54cm in one inch how many Inches are in 19.9​
    5·2 answers
  • Water is heated to a certain temperature in a large microwavable container. If a cup is used to remove some of the water from th
    12·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!