A helium-filled balloon contains 125 mL of gas at a pressure of 0.974 atm. What volume will the gas occupy at standard pressure?

128.33 mL He

125.974 mL He

121.75 mL He

124.026 mL He

1. Mountains are most likely formed a. when glaciers melt. b. from earthquakes. C. when land sinks. d. where tectonic plates collide.

Why is potassium less reactive than silver

The September 11th attacks were later linked to A. Hamas. B. al-Qaeda. C. Hezbollah. D. Saddam Hussei

Substances that are considered acidic are also called alkaline, true or false

Rainforests are typically responsible for global oxygen turnover

Suppose you went bowling, but instead of a bowling ball you rolled a ping pong ball down the alley. What do you think would happen?

Which expression represents the ΔH for a chemical reaction in terms of the potential energy, PE, of its products and reactants?

Identify the element that has a ground state electronic configuration of [ar]4s23d104p 3.

A geneticist has discovered a new compound that is made up of a small number of identical subunits. The subunits are joined end to end in long chains. Based on this information, what best can be concluded about these subunits? A. They are ketones. B.

What kind of cell keep dirt off your body's organs