What is the change in electrons for sulfur in the following reaction?
SO2 (aq) + Cr2O7^2-(aq) -> SO4^2- (aq) + Cr^3+ (aq)

A. Gain 3 electrons
B. Gain 5 electrons
C. Lose 2 electrons
D. Lose 1 electron

Harvey kept a balloon with a volume of 348 milliliters at 25.0˚c inside a freezer for a night.  when he took it out, its new volume was 322 milliliters, but its pressure was the same.  if the final temperature of the balloon is the same as the freezer’s, what is the temperature of the freezer? the temperature of the freezer is  kelvins.

(apex) when a cup of water is dropped, as the cup falls, the water in the cup falls out true or false?

What happens when an atom of sulfur combines with two atoms of chlorine to produce sci2? a. each chlorine atom shares a pair of electrons with the sulfur atom. b. an electron is transferred from each chlorine atom to the sulfur atom. c. an electron is transferred from the sulfur atom to each chlorine atom. d. each chlorine atom shares all its valence electrons with the sulfur atom.