Two moles of oxygen gas is reacted with hydrogen gas to produce water in this reaction: 2 H2 + O2 → 2 H2O In the lab you actually made 33.1 grams of water. What is the percent yield? 218.10% 91.80% 45.87% 54.50%

The balloon is removed from the freezer and returned to its initial conditions. It is then heated to a tempatuew of 2T at a pressure of 2P. How does the volume of the balloon change?

Which of the following is evidence of a chemical change? phase change the formation of a gas mass change change in surface area

Module 2 dba for chemistry questions? flvs

using boyles law solve the following: An unknown gas has a volume of 200.0 mL and a pressure of 350.0 torr, if pressure were increased to 700.0 torr, what is the resulting volume?

Sulfuric acid is essential to dozens of important industries from steelmaking to plastics and pharmaceuticals. More sulfuric acid is made than any other industrial chemical, and world production exceeds 2.0 x 10 kg per year.

Why is parts per million a useful form of measurement when discussing environmental issues?

What affects gravity

7. An element found in period 4 would have how many energy levels/shells?

At a certain temperature this reaction follows first-order kinetics with a rate constant of 0.00285 s^-1: 2Cl_2 O_5 (g) rightarrow 2Cl_2 (g) + 5O_2 (g) Suppose a vessel contains Cl_2 O_5 at a concentration of 0.640 M.

02:Matter and Change What is one difference between a mixture and a compound? A. A compound can only be separated into its components by chemical means. B. A compound consists of more than one phase. C.