How to calculate an Apparent weight ​

How much work is done lifting a 9.10 kg box straight up onto a shelf that is 1.80 m high?

What is created when solids,liquids,an gases mix with one another

At very high pressures, gases become and will eventually a) more dense; become hotter b) more dense; change to a liquid or solid c) less dense; combust d) less dense; turn into a liquid