Question 44Fill in the blanks(a) In a chemical reaction, the sum of the masses of the reactants and products remains unchanged. This is called ___.(b) A group of atoms carrying a fixed charge on them is called ___.(c) The formula unit mass of Ca3(PO4)2 is ____.(d) Formula of sodium carbonate is ___ and that of ammonium sulphate is ____.

Question 44Fill in the blanks(a) In a chemical reaction, the sum of th

1.	Question 44Fill in the blanks(a) In a chemical reaction, the sum of the masses of the reactants and products remains unchanged. This is called ___.(b) A group of atoms carrying a fixed charge on them is called ___.(c) The formula unit mass of Ca3(PO4)2 is ____.(d) Formula of sodium carbonate is ___ and that of ammonium sulphate is ____.
Answer» Question 44 Fill in the blanks (a) In a chemical reaction, the sum of the masses of the reactants and products remains unchanged. This is called ___. (b) A group of atoms carrying a fixed charge on them is called ___. (c) The formula unit mass of $C a_{3} (P O_{4})_{2}$ is ____. (d) Formula of sodium carbonate is ___ and that of ammonium sulphate is ____.