A sample of hydrogen at 2.5 atm had its pressure decreased to 0.50 atm produced a new volume of 750 mL. What was its original volume? P1 V1 = P2 V2

What are the primary responsibilities of a chemical engineer involved in "r& d"? develop large scale manufacturing operations discover new products and processes training of new chemists determine products needed by consumers

What is the value of keq for the reaction expressed in scientific notation?

Which process does not require the presence of a physical substance in order to transfer heat? air in the atmosphere is heated by the ground. this warm air then rises, and cooler air falls. this is an example of what type of process? how is conduction different from radiation?