What is 4.2 converted into grams

Hydrogen and helium are both members of?

9.98 kg of r-134a at 300 kpa fills a rigid container whose volume is 14 l. determine the temperature and total enthalpy in the container. the container is now heated until the pressure is 600 kpa. determine the temperature and total enthalpy when the heating is completed. use data from the steam tables.

Acalorimeter uses the principle that thermal energy flows from hotter material to colder material until both reach the same