In the reaction below, how many grams of h2o (g) are produced when 2.1 grams o2 (g) are consumed? c4h6 (g) + o2 (g) → co2 (g) + h2o (g)

a. 1.2

b. 660

c. 0.64

d. 2.2

e. 0.0020

17. What mass of ethylene glycol, when mixed with 225 g H2O, will reduce the equilibrium vapor pressure of H2O from 1.00 atm to 0.800 atm at 100 °C? The molar masses of water and ethylene glycol are 18.02 g/mol and 62.07 g/mol, respectively.

Molten gallium reacts with arsenic to form the semiconductor, gallium arsenide, GaAsGaAs, used in light emitting diodes and solar cells: Ga (l) + As (s) → GaAs (s) Ga (l) + As (s) → GaAs (s) If 4.00 gg of gallium is reacted with 5.

When is the carbon stored in plants released?

What is an astronomical unit A) A measurement of the length for the universe B) The measurement from Mars to the sun C) A measurement for the diameter of the sun D) The measurement of the Milky Way galaxy

List two ways to measure the gravitational potential energy of the ball when it's dropped from different heights. Think about the motion of the ball and your energy flow diagram. Give an argument to support your choices.

How does the tilt of earths axis affect the number of daylight hours and the temperature of a location on earth?

What's the ph of a 6.7*10^-5 m H + solution

The citric acid cycle (cac) is activated in the presence of oxygen, but what is the link between the cac and oxygen? pick the one best choice: a. oxygen is an allosteric activator for citrate synthase. b.

An experiment is performed on a puck on a level air hockey table, where friction is negligible. a constant horizontal force is applied to the puck, and the puck's acceleration is measured.

A plane travel for about 2.5 hours at a velocity of 1200 km/hr east. What distance did it travel?