The mass of a sample of gas is 426 mg. Its volume is 0.270 L at a temperature of 88∘C and a pressure of 975 mmHg. Find its molar mass.

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

List four observations that indicate that a chemical reaction may be taking place

Increasing the substrate concentration in an enzymatic reaction could overcome which of the following? a) the need for a coenzymeb) allosteric inhibitionc) competitive inhibitiond) insufficient cofactors