What is activation energy? a. energy needed by the body to stay active b. energy needed to break chemical bonds c. energy provided by carbohydrate foods d. energy provided by fat foods

Which of the following is a physical property flammability heat of combustion solubility and toxicity

If 10.5 l of a at 0.98to 1.50 , is ?

When a chemist collects hydrogen gas over water, she ends up with a mixture of hydrogen and water vapor in her collecting bottle. if the pressure in the collecting bottle is 97.1 kilopascals and the vapor pressure of the water is 3.2 kilopascals, what is the partial pressure of the hydrogen?