The rate law for the reaction, A+B→C+D, is rate=k[A][B]. Which of the following is true?

The rate law for the reverse reaction is the same but with a change in the sign.
The rate law for the reverse reaction must be determined experimentally.
The rate law for the reverse reaction is rate=k[C][D]. T
he rate law for the reverse reaction is rate=k-1[C][D].

The famous scientist galileo galilei did several experiments with sloping planes, which he rolled metal balls down so that he could study motion. by changing the slope, he could study how the speed at which the ball rolled was affected. what was the independent variable in galileo's experiment? a. the speed of the ball b. the slope of the plane c. whether the ball moved d. what the ball was made of

Covalent compounds: mastery test select the correct answer what is formed when atoms join together with a covalent bond? a. an ion b. a molecule c. a neutral atom d. a noble gas

50 points! need answer asap. what type of organic compound contains the following functional group? (2 points)