The heat of combustion of methane (CH2) is -890 kJ mol-1. a) Write a thermochemical equation for the complete combustion of methane.
b) Determine the mass of methane (in g) that has to be burnt in order to heat 500 mL of water from 20.0°C to boiling. Assume all the heat released was used to heat the water.

Which best describes why nh4+ can form an ionic bond with cl-?

What does the process of natural selection involve

Which are examples of how technology has advanced scientific understanding.1using hot water to sterilize medical equipment.2transplanting a human organ into another individual.3inserting genes from one sheep into another cell to make a cloneunderstanding the different structures that make up a cell.4examining microorganisms from the deepest parts of the ocean