Question 9 10 pts
How many calories are released as 50.0 g of water cools from 100.0 °C to 25.0 °C?
750 cal
7500 cal
3750 cal
1250 cal

1. explain hydrogen peroxide, h 2 o 2 properties and decomposition reaction. 2. describe how each of the following natural cycles plays a part in earth’s climate system. (a) the water cycle (b) the carbon cycle

Nonpoint source pollution is difficult to control because it

What does the symbol (–hfus) indicate in a phase change?