Use this chemical equation to answer the question. What coefficient of KCl will balance the equation? (AKS 3b, DOK 1) CuS + _KCl → CuCl2 + K2S

A. 1

B. 2

C. 3

D. 4

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.

During which time interval does the object travel approximately 10 meters

Two solids are mixed in a flask and stirred. after a few minutes, the flask becomes cold. which of the following best describes this reaction? a. an exothermic reaction b. a combustion reaction c. an endothermic reaction d. a decomposition reaction