What is the purpose of the catalyst?

A. to start the chemical reaction

B. to stop the chemical reaction

C. to speed up the chemical reaction

D. to make the chemical reaction safe to observe

9 When the ground gets warm, it emits an invisible type of light called infrared light. This light can travel into the atmosphere and heat the air that it encounters. What type of heat transfer is described above? A. radiation B. precipitation C.

Be sure to answer all parts. Enter the formula for potassium dihydrogen phosphate and determine its molecular (formula) mass.

Which of the following is not an atom found in household bleach (NaOCI) ? A) sodium (Na) B) chlorine (CI) C) hydrogen (H) D) oxygen (O)

A gas sample containing 1.45 mol at 25°C exerts a pressure of 408 torr. Some gas is added to the same container, and the temperature is increased to 50.°C. If the pressure increases to 800.

How does water temperature influence the ability for oxygen & carbon dioxide to dissolve in it?

To what chemical reaction class does this reaction belong? 2 mg (s) + o2 (g) 2 mgo (s)

Which best illustrates how particle arrangement changes when solids change into liquids

Express in scientific notation (6.0x10^4) (3.1x10^-1)

How do you measure the mass of a liquid?

Given the following information, calculate the mass for B-11. B-10 has a natural abundance of 19.9 percent, while B-11 has a natural abundance of 80.1 percent. The mass of B-10 is 10.013 amu.