If 54

J

of heat is added to an aluminum can with a mass of 25.1

g

, what is its temperature change? Specific heat capacity of aluminum is 0.903

J/

g

∘

C

Explain why coal is a fossil fuel

Famous New Zealand scientist Ernest Rutherford was awarded a Nobel Prize in which field?

Which statement describes the masses of the particles that make up an atom?

How many moles of hydrogen molecules (h2) are present in 9 x 1023 molecules of hydrogen?

Which statements describe properties of stars? Check all that apply Stars produce energy through nuclear fusion. Stars produce energy through gravity. Stars are massive objects composed of gas. Stars are solid objects that we could stand on.

What product (s) forms at the cathode in the electrolysis of an aqueous solution of k2so4?

What element is used as a shield to protect people from radioactive substances?

The frequency of a given region of the electromagnetic spectrum is more than 3 x 1019 HZ. Note that the speed of light is 2.998 x 108 m/s. Which waves are found in this region? A. gamma rays B. visible light C. microwaves D. radio waves E. x-rays

A farmer uses water to irrigate his potato crops. Which roles of water does this examplify

How was helium first discovered?