You take 200. g of a solid at 30.0 °C and let it melt in 400. g of water initially at 85.1 °C. The water's temperature decreases from 85.1 °C to 30.0 °C. What is the heat of fusion of this solid?

I don't know I to do this problem

The rules of engagement (roe) working group is often used to (select all that apply.)

Liv sheldon given the balanced equation for an organic reaction: c2h2 + 2cl2 → c2h2cl4 this reaction is best classified as *

What rule is used to determine how many covalent bonds an element can form? a. the number of covalent bonds is equal to six c the number of covalent bonds is equal to five minus the group number plus the group number b. the number of covalent bonds is equal to eight d. none of the above minus the group number select the best answer from the choices provided