Whoever answers correct I’ll give you a please if you don’t no answer was I don’t know because this is for a test

What mass of carbon dioxide is produced from the complete combustion of 4.50×10−3 g of methane?

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

The minerals found in bones are deposited by living cells called