A container holds 1 mole of helium gas. The volume of the container is 2 liters and the pressure inside the container is 105.0 kPa. If the volume of the container is decreased to 1.5 liters, what will be the new pressure inside the container?

Do the number of protons in an atom of an element always equals its atomic weight.

Donald is making a model of a nitrogen atom. The box for nitrogen in the periodic table is shown. To represent a neutral atom, which of these must Donald include in his model?

What is the mass of 9.38x10^24 molecules in methane

What is the purpose of finding oxidation states in the half-reaction method for balancing equations? to use as coefficients in the final equation to identify the half reactions for the equation to make sure the equation is balanced electrically to

Write a chemical equation for the hydrolysis reaction that explains why an aqueous solution of ch3nh3cl is acidic.

Prepare a solution that is 0.1 M acetic acid and 0.1 M sodium acetate by measuring out 5.0 mL of the 1.0 M acetic acid solution and 5.0 mL of the 1.0 M sodium acetate solution in a 100 mL graduated cylinder, diluting the 10.

Which element has an ion that is smaller than an ion of calcium?

Which factor is responsible for the weak attraction between diatomic molecules of the halogens (group 7A) ? A) Hydrogen bonding B) Ionic bonding C) Dipole interactions D) London dispersion forces

Which is the correct equation for refractive index?

Alcl3) and lithium sulfate (li2so4) (note - this is a double replacement reaction. you need this information to predict the products of the reaction)