All of the above would be the answer
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<span>the chemical equation will be Ni(OH)2(s)------>heat---> NiO(s) + H2O(g)
</span><span>we know that the heat supplied to decompose the compound.In the result the product H2O is assumed to be in the vapor state so that is gas.
hope it helps
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At higher temperature, and lower pressure.
1) 1.8 micrograms(least)
2) 1.8 grams
3) 1.8 kilograms(greatest)
