Would your work in cleaning the beach be considered physical or a chemical change to the environment? Explain your reasoning.

Write about electronic configurations

How much heat (in calories) must be applied to a 100 mL beaker filled with boiling water in order to vaporize the water? 540 5.4 x 104 800 8,000

16. Why can grinding a solid into a fine powder increase the rate of reaction?

The concentration of calcium ion in a town's supply of drinking water is 0.0020 M. (This water is referred to as hard water because it contains such a large concentration of Ca21.

What is the name of the element with the atomic number 79

What is the formula of the most stable oxide of francium?

You just calculated that the heat of fusion for chloromethane is 6400 J/mol. The heat of fusion for hydrogen is 120 J/mol. Which of the following account for this difference? a. Hydrogen has stronger intermolecular forces than chloromethane. b.

Magnesium burns with a very bright light. When the flame goes out, a White powder is left behind. what is the word equation for this reaction.

Identify the types of intermolecular forces found for each of the liquids and relate these to the shape of the drop as seen from the side. Include the terms cohesive and adhesive forces properly in your explanations.

Which type of experiment follows ethical standards?