How many grams of F are in 295 g CaF2?

Mass: g

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

Astudent reacts 13 moles of iron with 21 moles of oxygen according to the following equation:

The number at the end of an isotope’s name is the number.