Answer:
means that 2 atoms of the element hydrogen have joined together to form w molecule.
Explanation:
a subscript is only used when more than ine atom is being represented.
Reaction equation:
Zn + 2HCl → ZnCl₂ + H₂
One mole of gas occupies 22.4 L at STP
Moles of H₂ = 112/22.4
= 5 moles
The theoretical amount of Zn needed is 5 mol
The actual amount = 5/0.85
= 5.88 moles
mass = moles x Mr
mass = 5.88 x 65
mass = 382.2 g
The answer is D.
Answer:
Funnel and filter paper
Explanation:
the balance only balances things out,
the beaker and flask will only help measuring
and the watch glass is to see things more clearly
