- Pressure=p=1atm
- Temperature=T=273K.
- V=1dm^3=1L
we need no of moles




No of molecules=No of moles×Avagadro no


Answer:
c
Explanation:
it is from crest to crest
Answer:
Explanation:
a) Zinc has a charge of plus 2 and hydrogen gas is H₂ so HCl would have a two in front to balance the equation
b) All have charges of plus one
c) Copper has a charge of plus two (given) and it needs two chlorine atoms to become stable and hence to balance the whole equation, you would need two moles of sodium hydroxide and sodium chloride
Answer:
5 g of H₂ are contained in the vessel
Explanation:
A typical excersise of conversion:
We determine molar mass of H₂.
This is a dyatomic molecule, as molar mass of H is 1g/mol, molar mass of H₂ will be 2g/mol.
Let's make the conversion of units:
2.5 mol . 2g/mol = 5 g
5 g of H₂ are contained in the vessel
Answer:
9.6 times 10 to 7th power divided by 3.0 times 10 to the 5th power can be written as follow. The final answer is 320.
Explanation:
When the divide 9.6 by 3.0 we get 3.2 and

So the calculation is as below.
