Well, Tin(Sn) is in Period 5 and a member of group 14.
I think it’s 2. Sorry if I’m wrong
Number of moles of FeCl2 used = mass/ molar mass
Number of moles = 507/126.751 = 4.
If one mole of Fe reacts with two moles of sodium
Then 4 moles of Fe produces 8 moles of sodium.
Number of moles of sodium = mass/molar mass
Molar mass of sodium chloride = 23 +35.5 = 58.5 g/mol
Hence mass = 8 * 58.5 = 468 g. Hence Option A.
Explanation:
pOH = ? (Data) molarity = 2.1 x 10 -6 M (formula) pOH = log /[OH] substitution pOH = -log [2.1 x 10-6] pOH = 5.7 and pH =14 - pOH ph -14 -5.7 pH = 8.3
Answer:
do you speak english? just curious?
Explanation: