The balanced equation for the combustion of Hydrogen is:

2 H2 + O2 → 2H2O

How many moles of H2O will be formed from the complete reaction of 0.750 moles of O2?

0.375 mol

1.50 mol

2.67 mol

0.750 mol

An obese man was discovered in his air-conditioned hotel room sitting in a chair in front of the television. The air conditioner was set for 65 degrees Fahrenheit. When the coroner arrived, the man's body exhibited rigor in his upper body only.

Suppose you are trying to find the identity of an unknown pure substance. The valence electrons of the substance's atoms feel an effective nuclear charge of + 1.

The volume of a gas is 4.0 L when the pressure is 1.00 atm. At the same temperature, what is the pressure at which the volume of the gas is 2.0 L?

What volume (in mililiters) of oxygen gas is required to react with 4.03 g of my at stp

Which of the following is an example of chemistry research in the main area of energy?. a. producing bioplastics. b. specific reactions between prescription drugs and chemicals in cells. c. developing rechargeable batteries. d.

You are in space and running out of water. You do have a great deal of magnesium carbonate pentahydrate. It is possible to extract the water from this.

What form of energy emission accompanies the return of excited electrons to the ground state?

A chemistry student was asked to draw the electron configuration for carbon. Explain what is wrong with the electron configuration below. What rule did the student violate (Aufbau principle, Pauli Exclusion principle, or Hund's rule) ? 1s22s23p2

During a laboratory experiment, 36.12 grams of Al2O3 was formed when O2 reacted with aluminum metal at 280.0 K and 1.4 atm. What wa volume of O2 used during the experiment? 302 + 4A1 - 2A1203

The relative abundance of the two isotopes is 99.9999 percent and 0.0001 percent, respectively. 1.0066 amu 3.0160 amu 3.5903 amu 4.0026 amu