chemist heats 100.0 g of in a crucible to drive off the water. If all the water is driven off, what is the mass of the remaining salt?

Which produce would best increase the amount of heat energy that is actually gained by calorimeter b

If you want to create an electrical current, which situation would produce a solution capable of this

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