A. 24.5 g of ammonia NH3 = how many moles of ammonia?

. b How many molecules of ammonia is that from 22. a.?

What is the specific name of the covalent compound consisting of nine carbon atoms and 20 hydrogen atoms? A. Nonane B. Nonacarbon decahydroxide C. Nonahydrogen decacarbon D. Hydrocarbon

Which pair of atoms has the most polar bond? (1) H-Br (2) H-Cl (3) I-Br (4) I-Cl

At a given temperature, 4.92 atm of Cl2 and 4.65 atm of Br2 are mixed and allowed to come to equilibrium. The equilibrium pressure of BrCl is found to be 1.597 atm. Calculate Kp for the reaction at this temperature. Cl2 (g) + Br2 (g) 2 BrCl (g).

Which type of emission has the highest penetrating power? (1) alpha (3) positron (2) beta (4) gamma

F an atom has 3 electrons outside of its nucleus, which combination of protons and neutrons would result in a neutral atom

Does a gas discharge tube filled with boron emit the same wavelength

a certain solution has a molarity of m = 6.39 mol/l and has a volume of v = 0.550 l what is the value of n

Alcohols are polar molecules. true false

If a normal force of 500 N is acting on two surfaces in contact with a coefficient of friction equal to 0.50, what would be the maximum force of static friction?

Elements with the same number of shells are called? All the element that have the same number of valence electrons and have similar physical and che. ical properties are called?