The following statements about carbon dioxide are true except
a. it can be prepared by the action of acid on caco₃
b. it is used in fire extinguishers
c. it dissolves in water at room temperature
d. it sublimes rather than melts at 20 ̊c and 1 atm pressure
e. it is a product of photosynthesis in plants

Consider the directing effects of the substituents on salicylamide and predict the possible structures of the iodination products. which do you think will be the major product?

To find the work done, the force exerted and distance moved are multiplied. a couch is moved twice before you are happy with its placement. the same force was used to move the couch both times. if more work is done the first time it is moved, what do you know about the distance it was moved? a) when more work was done, the couch was moved the same distance. b) when more work was done, the couch was moved less. c) when more work was done, the couch was moved further. d) when more work was done, the couch wasn't moved at all.

The primary products of complete combustion of fossil fuels are a. carbon dioxide and water b. methane and water c. carbon monoxide and water d. carbon dioxide and carbon monoxide