What is the mass of: 5.00 x 10^-2 mol cucl2

  The mass  of 5.00 x 10⁻²  mol   CuCl₂ is   6.725 grams

calculation

mass  =  moles  x  molar  mass

from  periodic table the molar mass  of CuCl₂  = 63.5 + (35.5 x2) =134.5  g/mol

moles is therefore= 5.00 x 10⁻²   x 134.5 g/mol  =6.725  grams

1 a

2 d

3 a

4 c

explanation:

if you mean hydrogen and oxygen then water is the product