Atoms are the smallest division of the element. The potassium atoms present in the 235 gm of the compound is
atoms.
<h3>What is the number of atoms?</h3>
Given,
- Mass (m) of Potassium sulfide
= 235 gm - Molar mass (M) of Potassium sulfide = 110.26 g/mol
Calculate the number of moles as:

In the given compound
, there are two atoms of potassium and one atom of sulphur.
If, 1 mole =
atoms of potassium
Then, 2.13 moles = X atoms
Solving for X:

Therefore, option c.
is correct.
Learn more about atoms here:
brainly.com/question/11411852
Answer:
V = 36.7L of 
Explanation:
1. Write the chemical reaction for the decomposition of sodium azide:

2. Find the number of moles of
produced by the decomposition of 71.4g of
:

3. Use the ideal gas equation to find the Volume of
occupied by 1.65 moles of
, at the temperature and pressure given by the problem:

Solving for V:

Converting the temperature from ◦C to K:
25◦C+273.15=298.15K
Replacing values:

V=36.7L of 
Complete ionic:
Cu(aq) + 2Cl(aq) + 8O(aq) + 2Na(aq) + C(aq) + 3O(aq) = CaCO3(s) + 2Na(aq) + Cl(aq) + 4O(aq)
Net ionic:
Cu(aq) + Cl(aq) + 4O(aq) + 2Na(aq) + C(aq) + 3O(aq) = CaCO3(s)
So write everything out as IF it will dissociate in water. So everything that is aq splits but solid just floats to the bottom of the mixture. Cancel what you can (in this case the two from the ClO4 on the left of the equation cancels with the ClO4 from the right) and the 2Na cancels. Then, write out the whole solution and you are done!
It will form HCN Hydrogen Cyanide.
Answer:
1.evaperation
2.condenstation
3.precipatation
Explanation:
So I guess condenstation leads to precipatation-