A-Fe pretty sure ! Do good
Since according to ideal gas law, PV=nRT and you have 1.2atm, plug in the value for volume but make sure to convert to L instead of mL and convert temperature to Kelvin
<span>One mol of NaCl (6.02 x1023 formulas) has a mass of 58.44 g. Concept 2. The relation between molecular (formula) mass and molar mass. To obtain one mole of copper atoms (6.02 x 1023 atoms), weigh out 63.55 g copper.</span>
Answer:
1. Hot air is less dense then cold air therefore it is lighter the cold air. Because the hot air is less dense it helps lift the balloon up and because cold air is more dense it is heavier and helps the balloon slowly drop the balloon.
To be honest I don't know what 2 is but hope this helps some!
Freezing could be a good answer