In the following combustion reaction, what is the mole ratio of diatomic oxygen to water?2 C2H6 + 7 O2 (g) - - > 4 CO2 + 6 H2O

A. 6/7

B. 7/4

C. 7/6

D. 6/7

How many ions form when 39 grams of calcium fluoride are added to excess water? a. 0.50 mol b. 1.0 mol c. 1.5 mol d. 3.0 mol

Use your Cabbage pH Indicator Key to determine the pH of each. Enter the pH ranges into the data table.

The chemical symbol for sodium is A. N. B. S. C. Na. D. Sn.

In the late 1400s, ties among people of the same formed the basics of most aspects of life in rural west Africa

What exactly is carbon dating?

A solution is made by dissolving 25.20 g of aluminum acetate in 185.0 mL of water. What is the concentration of acetate ions?

Which best describes how sediment forms? erosion breaks down rock and other material molten rock cools above earths surface loose material is cemented by pressure chemical changes cause sediment to compact together

How will you know whether a solution is saturated or supersaturated?

What is the number of moles of 27.6g of lithium?

Air is transferred from a 75 L tank where the pressure is 125 psi and the temperture is 288 k to a tire with a volume of 6.1 L and a pressure of 25 psi. What is the new temperture.