I don’t know about 3 but I know that 4 is solid, 5 is you’ll feel the vibration first, 6 is you’ll see the lightning first because the speed of light is faster than the speed of sound and 7 is sound waves need a medium to travel and light waves don’t, sound waves are longitudinal and light waves are transverse, and sound waves are mechanical waves while light waves are electromagnetic waves
Answer:
Mole of the H2O = 4.5
Number of molecules =4.5 multipled by avogadro's number.
This would equal -1 or negative one
Lengthy problem. I have attached a paper with the answer.
keep in mind that the way to answer these question depends on the professor's way of teaching it.
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