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
balu736 [363]
1 year ago
15

The hydrogen gas produced is collected over water at 25.0 oC. The volume of the gas is 7.80 L, and the total pressure in the gas

collection vessel is 0.980 atm. Calculate the mass of zinc metal that reacted in grams.
Chemistry
1 answer:
Eva8 [605]1 year ago
5 0

Answer:

20.4 grams Zn

Explanation:

To find the mass, you first need to find the moles. This can be found using the Ideal Gas Law equation:

PV = nRT

In this equation,

-----> P = pressure (atm)

-----> V = volume (L)

-----> n = moles

-----> R = Ideal Gas Constant (0.08206 atm*L/mol*K)

-----> T = temperature (K)

Before you can plug the values into the equation, you need to convert Celsius to Kelvin.

P = 0.980 atm                   R = 0.08206 atm*L/mol*K

V = 7.80 L                          T = 25.0 °C + 273.15 = 298.15 K

n = ? moles

PV = nRT

(0.980 atm)(7.80 L) = n(0.08206 atm*L/mol*K)(298.15 K)

7.644 = n(24.466)

0.312 moles = n

Now that you have the number of moles, you can convert it to grams using the atomic mass of zinc. The final answer should have 3 sig figs to match the sig figs in the given values.

Atomic Mass (Zn): 65.380 g/mol

0.312 moles Zn           65.380 grams
-------------------------  x  -------------------------  =  20.4 grams Zn
                                         1 mole

You might be interested in
. If this same atom with 22 protons and 19 electrons were to gain 3 electrons, the net charge on the atom would be
mina [271]

Answer:

neutral

Explanation:

19+3=22

22 protons & 22 neutrons --> neutral net charge

3 0
2 years ago
Amount moles 167 g of nitrogen​
skad [1K]
11.9 if i read your question correctly sorry if it’s wrong lol
5 0
3 years ago
An object has a mass of 55 grams and a density of 3.23g/ml ? what is the volume
lara [203]
Volume= mass divided by density
V= m/d
55/3.23
= 17.03
8 0
2 years ago
Explain why this reaction can be classified as a synthesis reaction
rusak2 [61]
The reason why the reaction written on the picture can be classified as a synthesis reaction is :
the reaction shows one compound that formed from two compounds 

hope this helps
5 0
3 years ago
Describe what happens to the molecules in the ice as temperature of the ice increases
german

Answer:

When you heat ice, the individual molecules gain kinetic energy, but until the temperature reaches the melting point, they don't have energy to break the bonds that hold them in a crystal structure. They vibrate more quickly within their confines as you add heat, and the temperature of the ice goes up.

8 0
2 years ago
Read 2 more answers
Other questions:
  • Trans fats: Think about how the prefix trans- is used in naming alkenes.
    15·2 answers
  • What are some factors that might cause our percent yield to be greater than 100%? What are some factors that might cause it to b
    5·1 answer
  • Which metal in Period 5 is very reactive and has two valence electrons in each atom?
    9·2 answers
  • What is Li+1 atomic mass
    6·1 answer
  • Which of these is an example of a physical change?
    11·1 answer
  • Which type of stoichiometry problems does not require the use of molar mass?
    8·1 answer
  • The Faruq family uses 548 liters of water per day.
    7·1 answer
  • 3 complete paragraphs on Static Electricity
    8·1 answer
  • How does energy from the Sun drive the cycling of matter?
    9·1 answer
  • Dan bikes 10 km west and then bikes another 5 km west. What is Dan's
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!