A sealed balloon is filled with 2.20 liters of helium gas at 20.0° C. If the pressure does not change, what is the temperature when the balloon expands to a volume of 2.60 liters?

16.9° C

23.6° C

25.1° C

73.3° C

What is a cold front

When 1.187 g of a metallic oxide is reduced with excess hydrogen 1.054 g of the metal is produced. what is the metallic oxide?

You have a 20 gram piece of aluminum and a 40 gram piece of aluminum sitting in the sun. Which piece of aluminum will increase by ten degrees first? What is your evidence and reasoning?

How do you know how many valence electrons are in a molecule?

A bucket of muddy water is an example of a (n): 1) homogeneous mixture 2) heterogeneous mixture 3) compound 4) element

Which describes the volume of 1 mol of gas at standard temperature and pressure? ER The volume is greater for a larger mass of gas. The volume is the same for any gas. The volume depends on the size of the container.

When studying historical geology, which type of rock provides the most useful evidence for uncovering what occurred? metamorphic igneous basalt igneous granite sedimentary

Calculate the molar solubility of ca (io3) 2 in each solution below. the ksp of calcium iodate is7.1 * 10-7.

At normal temperature and pressure, air has a density of 0.001184 g/mL. What is the mass of air in a room that is 3.07 m by 3.00 m by 3.77 m? Answer in units of kg.

A gas made up of atoms escapes through a pinhole 0.155 times as fast as h2 gas. write the chemical formula of the gas.