the hot and dry air mass are most likely to rise
The hot and dry air mass is most likely to move in the direction where lower pressure systems exist. This typically means that it will move towards areas with cooler temperatures or where moist air masses are located.
Most likely not. Any regular activity, including exercise will maintain muscle mass in general.
Niall most likely
A cat is most likely to have a mass close to 3 kilograms.
Most likely on the weekends.
Most likely Niall.
Generally to the west
The correct measurement will most likely be the mass measured on the balance. Balances are precise instruments used for measuring mass accurately, so the measurement obtained is likely to be correct.
An air mass originating over north central Canada would most likely be cold and dry.
An atom with a mass of 15 amu is most likely a nitrogen atom, as the atomic mass of nitrogen is approximately 14.01 amu. This means that the atom may have gained or lost a particle, altering its mass slightly.
Most likely by winning them in a contest
An air mass that forms over water at high latitude is most likely cold. The air mass over the water would also be quite humid.