Question

Рассчитайте молярную массу соединения NaCl, MgSO4, Ca(NO3)2

Answer 1

Mr (NaCl)=23+35,5=58,5

M (NaCl)=58,5 г/моль

M (MgSO4)=24+32+16*4=120 г/моль

M(Ca(NO3)2)=40+14*2+16*2*3=164 u/vjkm

 

Answer 2

Calculation of Molar Mass

To calculate the molar mass of a compound, we need to sum up the atomic masses of all the atoms in the compound. The atomic masses can be found on the periodic table. Let's calculate the molar masses of the compounds you provided:

1. Sodium Chloride (NaCl): - Atomic mass of Na = 23 g/mol - Atomic mass of Cl = 35.5 g/mol - Molar mass of NaCl = 23 + 35.5 = 58.5 g/mol 2. Magnesium Sulfate (MgSO4): - Atomic mass of Mg = 24 g/mol - Atomic mass of S = 32 g/mol - Atomic mass of O = 16 g/mol - Molar mass of MgSO4 = 24 + 32 + 4 * 16 = 120 g/mol 3. Calcium Nitrate (Ca(NO3)2): - Atomic mass of Ca = 40 g/mol - Atomic mass of N = 14 g/mol - Atomic mass of O = 16 g/mol - Molar mass of Ca(NO3)2