Calculate the total quantity of heat required to convert 25.0 g of liquid ccl₄(l) from 25.0°c to gaseous ccl₄ at 76.8°c (the normal boiling point for ccl₄)? the specific heat of ccl₄(l) is its heat of fusion is and its heat of vaporization is
a. 0.896 kj
b. 1.43 kj
c. 5.74 kj
d. 6.28 kj.

Who was the first scientist to measure speed as distance over time?

Holes drilled several kilometers into earth’s crust provide direct evidence about earth’s interior in the form of

Emmy kicks a soccer ball up at an angle of 45° over a level field. she watches the ball's trajectory and notices that it lands, two seconds after being kicked, about 20 m away to the north. assume that air resistance is negligible, and plot the horizontal and vertical components of the ball's velocity as a function of time. consider only the time that the ball is in the air, after being kicked but before landing. take "north" and "up" as the positive ‑ and ‑directions, respectively, and use ≈10 m/s2 for the downward acceleration due to gravity.