+1 vote
in Chemistry by (29.7k points)

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 Ca3 (PO4)2 is ————. 

(d) Formula of sodium carbonate is ———— and that of ammonium sulphate is ————.

Please log in or register to answer this question.

1 Answer

0 votes
by (128k points)

(a) Law of conservation of mass 

(b) Polyatomic ion 

(c) (3 × atomic mass of Ca) + (2 × atomic mass of phosphorus) + (8 × atomic mass of oxygen) = 310 

(d) Na2 CO3 ; (NH4)2 SO4

Welcome to Sarthaks eConnect: A unique platform where students can interact with teachers/experts/students to get solutions to their queries. Students (upto class 10+2) preparing for All Government Exams, CBSE Board Exam, ICSE Board Exam, State Board Exam, JEE (Mains+Advance) and NEET can ask questions from any subject and get quick answers by subject teachers/ experts/mentors/students.