What will happen to the density of a substance if it contracts when it freezes?

1. density will decrease

2. density will increase

3. density will remain the same

4. change in density cannot be predicted

A stock solution of Blue #1 has a concentration of 5.736 M. 3 mL of this solution is diluted with 8 mL water. What is the concentration of the resulting solution? Provide your response to 3 significant figures.

The enthalpies of formation of the compounds in the combustion of methane, CH4 (9) + 20, (g) → C02 (g) + 2H2O (g), are CH4 (g) : AH = - 74.6 kJ/mol; CO2 (g) : AH + = - 393.5 kJ/mol; and H2O (g) : AHp = - 241.82 kJ/mol.

Which element can expand its valence shell to accommodate more than eight electrons?

1. Non contact forces can act at a distance True False 2. Contact forces can act at a distance True False 3. Which of the following are examples of non contact forces? Choose ALL that apply. A. Friction B. Gravitational force C. Magnetic force D.

How would you describe what happens to the electrons in a covalent bond?

Which of the following describes chemical properties

What's nuclear decay

When is a hurricane nears land, causes the most damage?

What is the chemical formula for gallium chlorine?

What three processes cause fireworks to emit light?