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To identify a diatomic gas () a researcher carried out the subsequent experiment: She weighed an empty 4.6- bulb, then filled it with the gas at 1.80 and 24.0 and weighed it again. The difference in mass was 9.5. Classify the gas.
Diamond is the hardest substance and the best conductor of heat yet characterized. For these reasons, it is used widely in industrial applications that require a strong abrasive.
1 mol of ar initially at 298 k undergoes an adiabatic expansion against a pressure p external 0 from a volume of 20.0
Solid hydroxylapatite is dissolved in water to form a saturated solution. What is the concentration of Ca2 in this solution if [OH-] is somehow fixed at 4.90 × 10-6 M
A sample of a gas in a piston/cyclinder apparatus occupies 30.2 mL at 1.08 atm and 22.2°C. If the volume of the sample is increased to 67.3 mL and the temperature changes to 30.9°C, what is the new pressure, in atm, of the sample
An airplane is pressurized to 650 mmHg. If air is 21% oxygen, what is the partial pressure of oxygen on the plane?
Strawberries contain about 15 wt% solids and 85 wt% water.To make strawberry jam, crushed strawberries and sugar are mixed in a 45:55 mass ratio, and the mixture is heated to evaporate water until the residue contains one-third water by mass.
when ch4 methane of two grams are burned in a bomb calorimeter the temperature rises from twenty four degree
Assume that the liquid is an ideal solution and apply Raoult's law to find the following. What is the temperature of the liquid
Scientists estimate that the CO2 concentration in the atmosphere was 750 ppm during the Cenzoic era. If one ignores acid/base equilibria in solution, calculate the concentration of CO2 in the ocean during the Cenzoic era.
A gas sample was collected over water at 25.3 0C. The total pressure is determined to be 0.97 atm. What is the partial pressure of the gas that was collected?
Complete the following problems using dimensional analysis. Balance all of the equations that need to be balanced. The answers are given in parenthesis at the end of each problem.
The ternary compounds called chlorofluorocarbons, or Freons, have proved to be very valuable as refrigerants and as cleaning agents for circuit boards. Unfortunately, in the atmosphere these compounds produce chlorine atoms that catalyze the decom..
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