imagine there was no tilt to the earth's axis and earth's orbit was circular. what would be true about the length of days and nights on earth?

Two up quarks and one down quark make up which of the following particles? A) proton B) neutron C) lepton D) electron

Which statement defines calorimetry?

There are three gases in a sealed container. The partial pressure of gas A is 35 torr and the pressure of gas B is 3 torr. The total pressure in the container is 45 torr. What is the partial pressure of gas C?

Which of the following substances is heterogeneous? A. 3% hydrogen peroxide B. The lint from your clothes dryer C. A copper wire D. Iron E. Baking soda

What is the mass in grams of one mole of He?

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.