Science question describe why the core of the earth is solid, despite its extreme temperature

Cucl2 + 2nano3 cu(no3)2 + 2nacl what is the percent yield of nacl if 31.0 g of cucl2 reacts with excess nano3 to produce 21.2 g of nacl? 49.7% 58.4% 63.6% 78.7%

What is the standard unit of measure for acceleration?

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