Asample of br2(g) takes 48.0 min to effuse through a membrane. how long would it take the same number of moles of ar(g) to effuse through the same membrane?

Which of the following is not a good technique for managing used oil? a) have specific, labeled catch pans available for technicians who are collecting oil b) spills in your shop and any releases on pavement or outside should be poured down a drain c) do not use oil containers for antifreeze or other non-similar fluids d) be prepared for oil spills with the proper absorbents

What is the ph of a solution that has a hydrogen ion concentration of 1.0 * 10 -9 m?

To find the enthalpy of a reaction in the lab, you measured the of the reactants and the change during the reaction.