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

If you want to prepare 5 liters of a 0.35m solution of nh4cl, how many grams of salt

What is the difference between chemical and physical properties and reactions

How many valence electrons does a sulfate (S04-2) ion contain? 30 32 24

What are the similarities between molecules and elements

Which statement must be true for any chemical reaction at equilibrium? (1) The concentration of the products is greater than the concentration of the reactants. (2) The concentration of the products is less than the concentration of the reactants.

A (what) forms when the sperm first fertilizes an egg

If 25 mls of 0.01 M NaOH is added to 75 mls of 0.005 HCl, what is the resulting pH

What is true when a reaction has reached equilibrium? A. the reaction has stopped. B. the concentration of the products is changing. C. the concentration the products and reactants is constant. D. the concentration of the reactants is changing.

A thesis is closest in meaning to a (n) A. Implication B. Contention C. Statistic

Under a high-powered microscope, Dan sees a cellular organelle. The organelle has a double membrane, and the inner membrane is folded. The organelle contains its own DNA. Which organelle does Dan see?