Fill in the blank with the molar mass of calcium nitrate. A link to the periodic table is provided for you.
g/mol

164.10 g/mol

Explanation:

Calcium Nitrate is Ca(NO₃)₂

To find its molar mass:

40.08 + (2 x 14.01) + (6 x 16.0) = 164.10 g/mol

61.98 is correct

Explanation:

given:

mass of na = 115 g

excess cl2

to determine:

mass of nacl produced

explanation:

given reaction is-

2na(s) + cl2(g) → 2nacl(s)

since cl2 is in excess, na will be the limiting reagent

as per the reaction stoichiometry na: nacl = 1: 1

i.e. moles of na reacted = moles of nacl formed

now, # moles of na = mass of na/atomic mass

                                  = 115 g/23 g.mol-1 = 5 moles

therefore, moles of nacl = 5

molar mass of nacl = 58 g/mol

mass of nacl = 5 moles * 58 g.mol-1 = 290 g

ans: amount of nacl produced = 290 g