General Chemistry Answers

A sample of nitrogen gas is condensed in a piston with a feely moving cylinder, allowing the volume to vary. At 0.0C, the volume of the gas is 375mL. To what temperature must the gas be heated to occupy a volume of 500.0mL

a golden breast plate weighting 18.63kg is dropped in a tub that initially contains water. after the breast plate was totally submerged the water level rises by 61.87 cm. the tub has a diameter of 6 centimeter and the breast plate was said to be made only from gold and silver. compute for the percentage of each components of the breast plate if the density of gold is 19.3 g/cubic centimeter and silver has a density of 10.49g/cubic

Find the circumference and cross-sectional area of a circle with radius (3.25 ± 0.01) cm.

What will happen to your hits and misses if the marbles is twice as large? What If they half as large?

The required mobile phase for the analysis caffeine in soft drinks in liquid

chromatography are methanol and water. What class of methanol and water must be

used?

Given the following experimental data, find the rate law and the rate constant for the reaction: NO (g) + NO2 (g) + O2 (g)  N2O5 (g) Run [NO]o , M [NO2[o , M [O2]o , M Initial Rate, Ms-1 1 0.10 M 0.10 M 0.10 M 2.1 x 10-2 2 0.20 M 0.10 M 0.10 M 4.2 x 10-2 3 0.20 M 0.30 M 0.20 M 1.26 x 10-1 4 0.10 M 0.10 M 0.20 M 2.1 x 10-2

 A suggested mechanism for the decomposition of ozone is as follows: O3 O2 + O fast equilibrium O + O3 2O2 slow step What is the rate law predicted by this mechanism? 

A possible mechanism for the gas phase reaction of NO and H2 is as follows: Step 1 2NO N2O2 Step 2 N2O2 + H2 N2O + H2O Step 3 N2O + H2 N2 + H2O Which of the following statements concerning this mechanism is not directly supported by the information provided?