What must be true of total positive charge and total negative charge in an ionic 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

Classify this reaction: 2al+n2-> aln.

How many grams of magnesium metal will react completely with 8.3 liters of 5.5m hcl? show all work