The carbon atom in coal becomes carbon dioxide when it is burned. the carbon atom changes from a solid structure to a gas but it’s mass doesn’t change.
M=6.58 g
ρ=0.7899 g/ml
v=m/ρ
v=6.58g/(0.7899g/ml)=8.33 ml
Answer:
L shell is the valence shell
Explanation:
The second shell is L
K,L,M,N
What part of it are you confused about
Answer:
n = 0.19 mol
Explanation:
Given mass = 15 g
The molar mass of AsH₃ = 77.94 g/mol
We need to find the number of moles in 15 g of AsH₃. We know that,
No. of moles = given mass/molar mass
So, there are 0.19 g/mol. Hence, the correct option is equal to 0.19 mol.