The melting point of pure gold is 1064.18°c. Sample A melts at 1063.50°c and Sample B melts at 1062.43°c. Which sample is likely to be least pure. Explain your answer.

Nitrogen dioxide reacts with water to form nitric acid and nitrogen monoxide according to the equation: 3no2(g)+h2o(l)→2hno3(l)+no(g) part a suppose that 4.2 mol no2 and 0.50 mol h2o combine and react completely. which reactant is in excess? express your answer as a chemical formula. nothing

If a substance is not at its melting or boiling point, as the heat content of a sample of matter increases, its temperature increases the number of intermolecular bonds decreases the space between particles increases the particles move faster

Imagine that you push on a large rock. at what point does your effort change the rock’s mechanical energy?