Solve for x in the following expression: 3 / x = 7

A) 2.33

B) 21

C) 4

D) 0.4285

What type of epithelium would be most suited for high levels of diffusion and filtration?

Which of the following is considered a universal solvent? A. HCl B. H2SO4 C. H2O D. H2O2

What must happen for liquid water to become water vapor? Select one: A. The water molecules must lose energy and stop moving. B. The water molecules must exert less pressure on their container. C. The water molecules must gain kinetic energy. D.

What force holds the nucleus of an atom together? A. Inter-nuclear attraction B. Gravity C. Van der Waals force D. Strong nuclear force

Which statement is true for balanced chemical equations?

In a constant pressure calorimeter experiment a student measures a temperature change of 2.5 degrees C. The heat measured was 2.200 kJ. What was the volume of the solution? Assume that Csol=4.18 j/gC

Which process will change a substance chemically? A. boiling B. melting C. burning D. evaporating

Why is it often difficult to determine the actual pathway for a chemical reaction?

Which of the following statements about ice melting is true? a. Water molecules move into a fixed position. b. Energy flows from the surroundings to the ice. c. Water molecules lose energy. d. The temperature of the ice increases as it melts

How many Oxygen (O) atoms are in the following? H2O + CO2 3 2 4