A piece of PVC plumbing pipe displaces 60 mL when placed into a container of water. If the pipe has a mass of 78g, what is the density of PVC?

What is the mass of 1.72 moles of sodium nitrate? Use the periodic table and the polyatomic ion resource. A. 85.0 g B. 91.2 g C. 146 g D. 273 g

A substance is found to be reactive, flammable, soluble, and explosive. Which of these observations is a physical property? A. reactive B. explosive C. flammable D. soluble

294 joules of heat is transferred to a 10.0 gram sample of silver at 25.0º C. What is the final temperature of the silver? The specific heat capacity of silver is 0.24 J/g∙°C.

If a weather map has a symbol that shows a circle with an H in the middle, what is it referring to? A.) high pressure B.) high weather C.) high temperature D.) humid weather

Which electron configuration represents the distribution of electrons in a potassium atom in the ground state?

Which of the following correctly describes how metals behave in an ionic bond? Metals lose their valence electrons and form positive ions. Metals lose their valence electrons and form negative ions.

A pharmacist measures the mass of a powdered drug. The mass is 506 mg. What is the mass in grams? Write your answer as a decimal.

Which of these is a source of sediment? A. Fragments if other rocks B. Chemicals and minerals dissolved in water C. Sea shells D. All of the above

Entropy is greater at higher trophic levels than at lower levels ... True of False

If the caffeine concentration in a particular brand of soda is 2.85 mg/oz, drinking how many cans of soda would be lethal? Assume that 10.0 g of caffeine is a lethal dose, and there are 12 oz in a can.