Why do the properties of elements change in a regular way across a period?

g a package of aluminum foil contains 50 ft2 of foil, which weighs approximately 8.0 oz. aluminum has a density of 2.70 g/cm3. what is the approximate thickness of the foil in millimeters

Water is known as the universal solvent. One reason water makes a good solvent is because it is composed of polar molecules. What makes a water molecule a polar molecule? A. The water molecule never develops a charge and is always neutral.

What is a London force?

Molar solubility of CuBr Ksp = 6.3 x 10-9

Compound made from oil

During a laboratory experiment you discover that an enzyme-catalyzed reaction has a delta G of - 20 kcal/mol. If you double the amount of enzyme in the reaction, what will be the delta G for the new reaction

A liquid mixture in which particles can be seen and easily separated by settling or filtration is a a. solution. b. suspension. c. solvent. d. solute.

Which material best absorbs sound waves in a room? a. heavy curtains b. hardwood floors c. brick walls d. cement floors

Does density of water depend on the amount of water present?

Which of the following air fronts does not move? a Occluded front b Cold front c Stationary front d Warm front