If you wanted to protect water from freezing, which of the compounds below would accomplish this best. nano3, mg(no3)2, or al(no3)3

How many grams of magnesium metal will react completely with 8.3 liters of 5.5 m hcl? show all of the work needed to solve this problem. mg (s) + 2hcl (aq) → mgcl2 (aq) + h2 (g)

An atom of sodium-23 (atomic number = 11) has a positive charge of +1. give this information, how many electrons does it have? how many proteins and neutrons does this atom have

The fact that the total amount of energy in a system remains constant is a(n)