Answer:
148g/mol
Explanation:
The molar mass of a compound is the sum of the molar masses of all the individual elements present in the compound.
Molar Mass of Mg(NO3)2 = 24 + 2[14 + (16x3)] = 24 + 2[14 + 48] = 24 + 2[62] = 24 + 124 = 148g/mol
1 chromium atom
number of (Cr) atom =
n = m/M
n = 52/52
n= 1g
Carbon dioxide and M
ethane