What is the mole ratio of carbon dioxide to water? 2C2H8 + 7O2 ->4H2O + 6CO2 7 mol : 4 mol
6 mol : 4 mol
6 mol : 2 mol
7 mol : 6 mol

Significant figures are digits read directly from the measuring instrument plus one more digit, which is __ by the observer.

Ethanol (c2h5oh) is produced from the fermentation of sucrose in the presence of enzymes. c12h22o11(aq) + h2o(g) 4 c2h5oh(l) + 4 co2(g) determine the theoretical yield and the percent yields of ethanol if 680. g sucrose undergoes fermentation and 326.5 g ethanol is obtained. theoretical _ g _ percent %

Avolleyball player hit a ball with a mass of 0.25 kg. the average acceleration of the ball is 15.5 m/s². how much force did the volleyball player apply to the ball? 62.0 n 3.87 n 62.0 m/s² 3.87 m/s²