Which of the following is an example of a chemical change? A. Boiling water
B. Burning paper
C. Dissolving sugar in water
D. Melting gold

Agas diffuses 1/7 times faster than hydrogen gas (h2). what is the molar mass of the gas? 100.10 g/mol 98.78 g/mol 86.68 g/mol 79.98 g/mol

The boiling point of liquids is very high what does it indicate

What is the lowest number energy level where a d sublevel is found