Consider the reaction between hydrogen gas and bromine gas to form gaseous hydrogen bromide (HBr). If 7 moles of hydrogen gas are mixed with 5 moles of bromine gas, how many moles of each species will be present when the reaction goes to completion.

Which term refers to a property that depends only on the amount of a substance? ©@

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

Under what conditions will a gas be most likely to exhibit the ideal gas properties predicted by the ideal gas law? 1)high pressures and high temperature, because particles are forced closer together with higher kinetic energy, so intermolecular forces of attraction are weaker 2)high pressure and low temperature, because particles are forced closer together and moving slower, so the volume of the particles is less significant 3) low pressure and high temperature, because particles are spread farther apart and moving faster, so the intermolecular forces of attraction are weaker 4)low pressure and low temperature, because particles are spread farther apart with lower kinetic energy, so the volume of the particles is less significant