What is the name of this compound??

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 percent by mass of oxygen in fe2o3

What mass of natural gas (ch4) must you burn to emit 276 kj of heat?