Which statement is true about the elements fluorine, chlorine, and oxygen?

A. They are all halogens.

B. They react easily with metals.

C. They are similar to noble gases.

D. They are all nonmetals.

Gay-Lussac's law states: A. The volume of a gas varies inversely with pressure. B. The volume of a gas varies directly with pressure. C. The temperature of a gas varies inversely with pressure. D.

What is the difference between the ground state and excited state for an atom

Which of the following describes an exothermic reaction? O A. AHI, reactants = 0 O B. AHf, reactants = AHf, products O C. A He, reactants > AHf, products O D. A He, reactants < AH, products

List 4 indicators that a chemical change has probably occurred

What term identified a type of reaction

A chemist determined by measurements that. 040 moles of gold participated in a chemical reaction. calculate the mass of gold that participated in the chemical reaction. round your answer to significant digits.

10) A screwdriver has the density of 5.5 grams per cubic centimeter. It also has the mass of 2.3 grams. What is the screwdriver's volume?

A chemist weighed out 20.7 g of sodium. Calculate the number of moles of sodium she weighed out

If 1.00 mol of argon is placed in a 0.500-L container at 20.0 ∘C, what is the difference between the ideal pressure (as predicted by the ideal gas law) and the real pressure (as predicted by the van der Waals equation) ? For argon, a=1.

Part 2: Finding Speed and Height Using Energy Directions: Use the KE and GPE equations to solve for speed or height depending on the situation. 1. A 1,000-kg car has 50,000 joules of kinetic energy. What is its speed? 2.