The specific heat capacity of lead is 0.13 J/g °C. How much heat (in J) is required to raise the temperature of an unknown substance with a mass of 15.0 g and a change
in temperature of 70 °C

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

What are scientists who study fossils called? ( a ) astronomers. ( b ) biologists. ( c ) geologists. ( d ) paleontologists.

Determine type of reaction & predict the product c3h12+o2 =