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If it takes 3 breaths to blow up a balloon to 1.2 L, and each breath supplies the balloon with 0.060 moles of exhaled air, how many mols of air are in 3 liters?
Assume that you have an aqueous solution of an unknown salt. Treatment of the solution with dilute BaCl2, AgNO3, and Cu(NO3)2 produces no precipitate. Which of the following anions might the solution contain
On a warm summer day in Athens, the temperature is 33C (dry bulb temperature) and the relative humidity is 60%. What is the absolute humidity (kg/kg Dry air)
calculate Delta S when the pressure of 1.0 mol of oxygen is doubled at a constant temperature T=298
There is less waste. II. Harsh reagents are avoided. III. It uses recombinant technology. IV. It needs intense purification.
How many grams of Mg2SO4 is required to make up 100mL of 20g/L Mg2SO4 solution in water?
A 29.0-g sample of water at 260. K is mixed with 48.0 g water at 300. K. Calculate the final temperature of the mixture assuming no heat loss to the surroundings.
The heat of combustion of bituminous coal is 2.5 × 104 J/g. What quantity of the coal is required to produce the energy to convert 100. lb of ice at 0°C to steam at 100°C
For a hydrogen atom with its electron in the 3p_z orbital, what is the longest wavelength of light that can ionize the atom?
Hard water contains alkaline earth cations such as Ca2+ which reacts with CO32- to form insoluble deposits of CaCO3. Will a precipitate of CaCO3 form if a 250mL sample of hard water having [Ca2+] = 8.0x10-4M is treated with the following
A metal is electrolyzed from aqueous solution by using an electrical current of 1.23 A for 2½ h, and 3.37 g of metal is deposited. In a separate experiment the number of electrons used for the reduction of the metal is 2.
Dalton law of partial pressure - The partial pressure of oxygen is maintained at 0.20 atm at this depth
How many moles of Urea were used to creat this tempreature difference? given the molecules weight (60.0551g/mol), how money grams of urea was used to give this change temperature value?
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