2. which of the following contains the most atoms? a. k2mno7 b. al2(so4)3 c. c4h4f4cl2 d. hg2(no3)2

Spend time observing or thinking about events that involve matter and energy. which events can you explain? which events can’t you explain?

Aclarinetist, setting out for a performance, grabs his 3.350 kg clarinet case (including the clarinet) from the top of the piano and carries it through the air with an upward force of 24.65 n. find the case's vertical acceleration. indicate an upward acceleration as positive and a downward one as negative.

Mechanical energy is when the amount of kinetic and potential energies added together remains the same. conserved created lost