Please help according to the laws of conservation of mass how much zinc was present in the zinc carbonate
a. 40 g
b. 88 g
C. 104 g
d. 256 g

Two atoms interact with each other as shown by the equation. complete the equation by filling in the missing parts. 1 2 3 4 5 h he li

Zoe is investigating the composition of substance a, an unknown substance. using chemical processes, she analyzes substance a and determines it is composed of sodium, oxygen, and hydrogen atoms in a ratio of 1 : 1 : 1. what is substance a? a. a compound b. an element c. a heterogeneous mixture d. a homogeneous mixture

What is the molar mass of potassium nitrate, kno3