Question

Fill in the blanks
a. In a chemical reaction, the sum of the masses of the reactants and
product remains unchanged. This is called ........................
b. A group of atoms carrying a fixed charge on them is called .....................
c. The formula unit mass of Ca. (PO4)2 is .....................
d. Formula of sodium carbonate is ....................
and that of ammonium sulphate
is ........................​

Answer 1

Answer:

a.Law of conservation of mass

b. poly atomic ion

c.310

d.Na₂CO₃, (NH₄)₂SO₄

Explanation:

Answer 2

Hey mate,

A. Law of conversation of mass.

B. poly atomic Ion .

C. 310

D. Sodium carbonate is Na2CO3 and ammonium sulphate (NH4)2SO4.

Hope it helps.