Convert the following mass of a compound into moles.

23.5g of NaCl

Which of the following is true for compounds?

If 20 grams of calcium combines completely with 16 grams of sulfur to form a compound, what is the percent composition of calcium in the compound?

Arrange the listed ions in increasing order of strength of reducing agent. Aluminum: Cobalt: Copper: Chromium: Mercury: Silver:

Which topic is most likely to be the focus of a myth

What could go wrong in a science lab?

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.