12. List examples of physical and chemical properties.

Explain how a Buffer acts to resist pH change in a system upon addition of an acid or a base

When generating equal amounts of energy, which of the following is true? (A) It is unknown how much carbon dioxide would be produced if burning coal or natural gas. (B) Burning coal produces more carbon dioxide than burning natural gas.

Determine which ordered pairs fall on the graph of f (x) = - 2x-1 Show all of your work for each ordered pair. Ordered Pairs: (1,1) (-1, - 4) (-2, - 1/8) (0,1/2)

Give the number of significant figures in this number: 0.070

A mixture was found to contain 1.50g of NH4CL, 0.80 g of NaCl, and 1.20 g of SiO2. What is the percentage of sand in this mixture?

Assuming constant pressure, rank these reactions from most energy released by the system to most energy absorbed by the system, based on the following descriptions: A. Surroundings get colder and the system decreases in volume. B.

Zircon is a mineral with the empirical formula ZrSiO4. If all the zirconium is 90Zr, all the silicon is 28Si, and all the oxygen is 16O, what mass of oxygen is present in 10. g of zircon?

Which property below is not a general property of metals: A. Ductile C. Malleable B. Poor conductor of heat D. High luster

Calculate the number of particles (atoms or molecules) of the following: 1. How many molecules are there in 24 grams of FeF3? 2. How many molecules are there in 450 grams of Na2SO4? 3. How many grams are there in 2.3 x 1024 atoms of silver?

Write a balanced equation for the decomposition reaction described, using the smallest possible integer coefficients. When calcium carbonate decomposes, calcium oxide and carbon dioxide are formed.