Which of the following reactions results in a decrease in entropy? 2SO2 (g) + O2 (g) yields 2SO3 (g) 2NH3 (g) yields N2 (g) + 3H2 (g) 2H2O2 (aq) yields 2H2O (l) + O2 (g) NaHCO3 (aq) + HCl (aq) yields NaCl (aq) + H2O (l) + CO2 (g)

What is the percent b mass of chlorine in NaCl

Scientists in 1. legal services 2. research and development 3. marketing 4. corporate management discover new products and proce and improve current technology.

What was the American public's opinion about joining the League of Nations? A. It supported the president and actively took part in the League of Nations. B. The public thought that America should lead the League of Nations. C.

How have chemists affected our world for good? A. Chemists have caused many problems that our present society must face. B. Chemists have given us the atomic theory and the scientific method. C. Chemists have learned how dangerous chemicals can be D.

A 2 L sample of N2 (g) and a 1 L sample of Ar (g), each originally at 1 atm and 0°C, are combined in a 1 L tank. If the temperature is held constant, what is the total pressure of the gases in the tank? a. 1 atm b. 2 atm c. 3 atm d. 4 atm e. 5 atm

Crude oil may contain hundreds of different types of hydrocarbons. Some examples include: Butane (C4H10) Dodecane (C12H26) Octane (C8H18) Benzene (C6H6) Many common fuels, such as gasoline and kerosene, are combinations of these substances or others.

What will happen if the concentration of water inside a cell is higher than the concentration of water outside a cell?

During a lab, you heat 1.04 g of a niso4 hydrate over a bunsen burner. after heating, the final mass of the dehydrated compound is 0.61 g. determine the formula of the hydrate and also give the full name of the hydrate.

Which molecule is a source of energy, a store of energy, and can mix with water?

How many atoms will you find in 2.0 moles of he?