5. How can you tell the difference between CuS and Cu2S

Automotive air bags inflate when sodium azide decomposes explosively to its constituent elements: 2NaN3 (s) → 2Na (s) + 3N2 (g) How many moles of N2 are produced by the decomposition of 1.25 mol of sodium azide? a) 4.32 b) 8.64 c) 1 ... e2 d) 1.

If you want to make more shells (CaCO3) then which direction should the reaction proceed?

Which of the following is the simplest representation of a molecule and its bonds?

The solubility of gas is 0.58 g/L at a pressure of 104 kPa. What is the solubility if it's solubility pressure increases to 250 kPa at the same temperature?

During the experiment is when data is A. recorded B. analyzed C. predicted D. ignored

How is the Gobi Desert different from the Sahara Desert

Which average wind speed do areas need to effectively power wind farms? A:1 mph B:5 mph C:10 mph D:16 mph

What is the total number of moles represented by 20 grams of CACO3 A. 0.1 B. 0.2 C. 1 D. 2

Which describes the polarity in a water molecule? a). partial negative charge on the oxygen atom because its electrons are pulled toward the hydrogen atoms b).

To what temperature in kelvin will a 2.3 L balloon have to be heated to expand to a volume of 400 L Assume the initial temperature of the balloon is 25 degrees celsius.