What is the change in the oxidation number of sulfur in the following reaction?

Bi2S3 (s) + HNO3 (aq) → Bi (NO3) 3 (aq) + NO (g) + S (s) + H2O (l)

A. - 3 to + 2, or + 5

B. - 2 to 0, or + 2

C. + 3 to - 3, or - 6

D. - 2 to - 3, or - 5

Only married people are called by God to live for others. True False

Which quantity does a light-year measure? A) distance B) speed C) time D) volume

How does an individual figure the total force exerted on an object by two forces acting in opposite directions? A. Add the two forces together. B. Subtract the smaller force from the larger force. C. Multiply the larger force by the smaller force. D.

A can of diet soda will float in water while a can of regular sugar soda will sink. which of these best describes why this would occur? a) the regular soda is more dense than the diet soda. b) the diet soda is more dense than the regular soda.

If 22.50 mL of a sodium hydroxide solution is necessary to neutralize 18.50 mL of a 0.1430 M HNO3 solution, what is the concentration of the NaOH? (Report your answer in molarity.)

A group of students are making a sign that is 3 meters long. If each student works on 20 cm of the sign how many students can work on the sign?

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

What is the main difference between a longitudinal wave and a transverse wave?

How many moles of methane (CH4) are in 7.31*10/25 molecules

What starting matirials do cells need for cellular respiration