Which of these equations is balanced?

a. Zn + 2HCl - - > ZnCl2 + H2

b. S8 + 24F2 - - > 8SF6

1. a

2. b

3. a and b

4. neither

A gas has a volume of 27.5 L at 302 K and 1.40 atm. How many moles are in the sample of gas?

8.38e-21 Q^2 - 1.07e-23 Q^2 + 3.15e+19 Solve for Q

Which of the following is an example of a behavioral adaptation A. Camofluge B. Migratation C. Sharp teeth D. Decreased oxygen use

Which are the organs of the digestive system

1. a chemical bond between atoms with similar electronegativities covalent bond 2. a measure of the ability of an atom to attract electrons within a chemical bond electronegativity 3.

TRY H Vele Elements y Llectron Configurations for P-Block Use the periodic table to determine the electron configuration for aluminum (AI) and arsenic (As) in noble-gas notation A [Ar]352301 [He1232206352301 [Ne]3:23p1 [Ne]352302

If you measure the mass of a model car to be 230 grams. the actual mass is 218 grams. what is your percent error.

If I have 1.9 moles of gas held at a pressure of 5 atm and in a container with a volume of 50 liters, what is the temperature of the gas?

A student measured 1.0 kcal when the student combined 99.7 mL of 3 M HCl with 100 mL of 3 M NaOH. Given that the reaction is HCl (aq) + NaOH (aq) → NaCl (aq) + H2O what was ΔHneutralization per mole of water?

Which is the odd one brass, copper, aluminum, iton, sapphire