How many molecules are in 4.50 moles of H2O?

A. 450 molecules B. 6.02 x 1023 molecules C. 2.71 x 1024 molecules D. 3.00 molecules

Using your data above, draw conclusions about the d-splitting for each ligand (H2O, en, phen). Order the complexes from least to greatest d-splitting, and discuss the reason for your ordering.

Balance 2Mg + O2 = 2MgO

In the following reaction, how many grams of ammonia (NH3) will produce 300 grams of N2? 4NH3 + 6NO → 5N2 + 6H2O The molar mass of ammonia is 17.0337 grams and that of nitrogen is 28.02 grams.

Lead thiocyanate, Pb (SCN) 2, has a Ksp value of 2.00*10-5. a) Calculate the molar solubility of lead thiocyanate in pure water. The molar solubility is the maximum amount of lead thiocyanate the solution can hold.

You have a 3.5 x 10^-5 M solution of perchloric acid. a.) Can you determine the pH of this solution? Explain why or why not. b.) If yes, what is the pH of this solution? Show all work.

Why is photosynthesis so important to plants, and can't animals use it?

One way the government of Kim Jong-il controls the lives of the people who live in North Korea is by a. requiring every citizen to vote. b. controlling information its people receive from the outside world. c. enforcing free trade with other nations.

Give reasons 1) copper utensils and sheets become blackish after some days

Predict the spontaneity of a reaction (and the temperature dependence of the spontaneity) for each possible combination of signs for? H and? S (for the system).

At 29°C, Kp = 5.3 ✕ 102 atm-2 for the following reaction. N2 (g) + 3 H2 (g) equilibrium reaction arrow 2 NH3 (g) When a certain partial pressure of NH3 (g) is put into an otherwise empty rigid vessel at 29°C, equilibrium is reached when 55.