Tornados and hurricanes develop over

If a solution process is exothermic, how does the energy required for dissolving the solute compare with the energy released? The energy required is equal to the energy released. The energy required is more than the energy released.

Laurie is moving a dresser with a mass of 250kg. She does 126 J of work with a force of 14 N. How far does she move the dresser?

In the 1990's, biologists studied the alligator population in Lake Apopka, Florida. This lake experienced a chemical spill of the pesticide dicofol in 1980, and researchers wanted determine the effects of the pollution on organisms in the area.

A nurse practitioner prepares an injection of promethazine, an antihistamine used to treat allergic rhinitis. If the stock bottle is labeled 30. mg/mL and the order is a dose of 10.0mg, how many milliliters will the nurse draw up in the syringe?

What subatomic particle does the atomic number identify?

Explain the relationship between the observations and the hypothesis

Be sure to answer all parts. Be sure to report your answer to the correct number of significant figures. Determine Kb of the weak base B whose conjugate acid HB + has Ka 6.6 * 10-4.

Compare and contrast each of the following terms. mass and matter

The rate constant of a reaction is 4.7*10-3 s-1 at 25°C, and the activation energy is 33.6 kJ/mol. What is k at 75°C?

What are the pros of using steel?