CH4 +202 — CO2 + 2H2O
How many moles of CO2 will be produced from 72.0 g of CH4 assuming O2 is available in excess?

At stp, what is the volume of 1 mole of co2?

The mass of a neutron is equal to the mass of a proton plus the mass of an electron. true or false false true

Which of the following is an example of physical change not a chemical change? a) a log gives off heat and light as it burns. b) a tree stores energy from the sun in its fruit. c) a penny lost in the grass slowly changes color. d) a water pipe freezes and cracks on a cold night.