Hydrogen gas was cooled from 423K to 323K. Its new volume is 75 mL. What was its original volume?

Which three things are related according to Newton's second law? a. force, mass, and acceleration b. force, matter, and acceleration c. force, motion, and acceleration d. force, weight, and acceleration

Heat is the measurement of energy from all the particles that are in a substance. true or false?

What are some uses for graphite

Which of these statements is true about chemical reaction rates? A. The reaction rates cannot decrease B. the reaction rates cannot increase C. The reaction rates can change D. The reaction rates are always constant

A certain first-order reaction (A→productsA→products) has a rate constant of 9.90*10-3 s-1s-1 at 45 ∘C∘C. How many minutes does it take for the concentration of the reactant, [A][A], to drop to 6.

What types of matter could be separated by physical methods?

What information does a net ionic equation give that a complete ionic equation does not show

What is the molality of a solution containing 4.0 moles of solute in 3.2 kg of solvent? Round to the nearest tenth. Don't forget the units.

What is the name of a binary compound made up of lithium and chlorine?

A scientist in London and a scientist in California both conducted independent investigations that produced similar results.