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A weather baloon is filled with 195.0 L of He and launched from sea level. The baloon is designed to continue its ascent to an altitude of 30 km. If the atmospheric pressure at 30 km is 28.0 torr and temp is 41 C, what is the volume of the baloon when it bursts
What would be the formula for the compound sample If a sample of a compound contains 1.36 mol of nitrogen atoms and 2.72 mol of oxygen atoms?
how many grams of aspirin are available for immediate absorption by the stomach? Assume immediate dissolution of aspirin and it does not significantly change the pH of the stomach contents. The pKa of aspirin is 3.50 and its molecular weight is 18..
How many moles of ethane (C2H6) would be needed to react with 62.3 grams of oxygen gas?
In the titration, 20.46 mL of the sodium hydroxide was used to react with 0.1082 grams of KHP. What is the molarity of the NaOH?
How many theoretical plates does the column have What is the plate height (in mm) of the column if the column is 11.7 cm long
The compound aluminum chloride is widely used to control chemical reactions in industry. It is made by the following reaction: Al2O3(s) + 3C(s) + 3Cl2(g)→ 2AlCl3(s) + 3CO(g)
How many moles of gas are in a container that is 2.00 L, at 30.0 atm and a temperature of 25.0 C?
Thallium and indium form +1 and +3 oxidation states when in compounds. Predict the fomulas of the possible compounds between thallium and oxygen and between indium and chlorine. Name the compounds
a sample of oxygen occupies 178 mL in a cylinder shown at a barometric pressure of 734 torr and 25 degrees Celcius. If the piston is pushed in and compresses the oxygen sample to 134 mL, what is the pressure (in torr) of the gas?
The temperature in the freezer compartment of a household refrigerator is kept at 0 F. On a summer day the ambient temperature is 92 F. The effective performance factor for the refrigerator (qc/w where qc is the heat removed from the frozen food c..
The measured boiling point of the solution was 65.46 °C. Calculate the molecular weight of the unknown substance.
Now if your lab partner needed 7.030 x 1019 molecules of Sodium cyanide (NaCN), how many milligrams would you need to weigh out?
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