Match each number to how it would appear in scientific notation. a. 8,330 8.33 × 10-3 b. 83.3 8.33 × 101 c. 0.00833 8.33 × 103 d. 0.0833 8.33 × 10-2 e. 83,330 8.33 × 104
Aroller coaster car is traveling down a track at 22 m/s. the car has a mass of 2000 kg. what is the kinetic energy of the car? a) 22,000 j b) 968,000 j c) 484,000 j d) 44,000 j
Dumbledore decides to gives a surprise demonstration. he starts with a hydrate of na2co3 which has a mass of 4.31 g before heating. after he heats it he finds the mass of the anhydrous compound is found to be 3.22 g. he asks everyone in class to determine the integer x in the hydrate: na2co3·xh2o; you should do this also. round your answer to the nearest integ