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How many moles of gas are in a balloon with a volume of 2.14 liters at a temperature of 298 K and a pressure of 1.11 atm?
A 15.00 mL sample of unknown concentration of sulfuric acid is precititated with excess lead(II) nitrate and a precipitate of lead(II) sulfate is collected.
If the copper is drawn into wire whose diameter is 8.50 mm , how many feet of copper can be obtained from the ingot? The density of copper is 8.94 g/cm^3 .
A hot air balloon is filled to a volume of 44.5 L at 758 torr. What will be the volume of the balloon if the pressure decreases to 748 torr under constant temperature?
The decomposition of potassium chlorate (KClO3 ) is used as a source of oxygen in the laboratory. How much potassium chlorate is needed to produce 24.1 mol of oxygen?
The EPA limit for lead in the water supply is 15 parts per billion by mass. Calculate the number of lead ions present in 1.00kg of water that is at the EPA limit for lead.
If the methane contained in 5.00L of a saturated solution at 25 ^circ rm C was extracted and placed under STP conditions, what volume would it occupy.
a mixture of gases containing .20 mol of SO2 and .2 mol of O2 in a 4.0L flask reacts to form SO3. If the temperature is 25C, what is the pressure in the flask after reaction is complete?
Draw the Fischer projection of the enantiomer of (4S, 5S)-5-sec-butyl-4-(1,1-difluoromethyl)nonane
If 20.0 g acetylene is allowed to completely react with oxygen , how many g of O2 are reacted? 2C2H2 + 5O2→ 4CO2 + 2H2O
2.00 x10^2 mL of .500 M HCl is mixed with 2.00 x 10^2 mL of .250 M Ba(OH)2. how many moles of water are produced in the reaction
The osmotic pressure,pie , of a solution of glucose is 83.1atm . Find the molarity of the solution at 298k .
The normal respiratory rate for a human being is 15.0 breaths per minute. The average volume of air for each breath is 505 cm3 at 20.0 degrees Celsius and 9.95 times ten to the fourth Pa. What is the volume of the air at STP that an individual bre..
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