Immediately after the golf ball is hit by the putter, the ball has 12 joules of mechanical energy. Seconds later, after the ball has rolled several meters through the grass, its mechanical energy has dropped to 4 joules due to friction with the grass and air.

The amount of mechanical energy lost by the golf ball is the amount of heat energy gained by the ball, grass, and air molecules due to friction.
A.
equal to
B.
less than
C.
greater than
D.
unrelated to

How many moles of magnesium is 3.01 x10^22 atoms of magnesium?

3) in peaches, [oh]=3.16x10-11 m a) find [h+ ] b) what is the ph? c) is the solution acidic, basic, or neutral?

There are two steps in the usual industrial preparation of acrylic acid, the immediate precursor of several useful plastics. in the first step, calcium carbide and water react to form acetylene and calcium hydroxide: cac2 (s) + 2h2o (g) → c2h2 (g) + caoh2 (s) =δh−414.kj in the second step, acetylene, carbon dioxide and water react to form acrylic acid: 6c2h2 (g) + 3co2 (g) + 4h2o (g) → 5ch2chco2h (g) =δh132.kj calculate the net change in enthalpy for the formation of one mole of acrylic acid from calcium carbide, water and carbon dioxide from these reactions. round your answer to the nearest kj .