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Write he basic principles and instrunmentaion of conductomery
Calculate the molality of total ions in an acqeous solution prepared by dissolving 0.400 moles of magnesium chloride in 850.0 g of water?
A stream of propane is throttled from 20 bar and 518 K to 0.42 bar. This process is irreversible due to frictional losses at the nozzle.
all possible structural formulas for all different conjugated dienes that can be completely hydrogenated
If 85 J of heat are added to a pure gold coin with a mass of 15g , What is its temperature change? Specific heat capacity of gold is 0.128.
Describe an electrochemical cell tthat would have the following net equation, by answering the following questions.
human growth hormone in 25.0 mL of solution has an osmotic pressure of 0.109 torr at 25.0°C. What is the molar mass of human growth hormone?
How much heat is required to convert 25.0g of ethanol at 25 degrees C to the vapor phase at 78 degrees C?
A gas sample containing 0.3525 moles of a compound is trapped in a 2.641 liter vessel on a manifold at a temperature of 28.4 oC. What is the pressure in the vessel,
While in Europe, if you drive 111 per day, how much money would you spend on gas in one week if gas costs 1.10 per liter and your car's gas mileage is 34.0 ?
What mass of sucrose should be combined with 464g of water to make a solution with an osmotic pressure of 8.60atm at 280K? (Assume the density of the solution to be equal to the density of the solvent.)
The decay constant for strontium- 90 is 0.0247 y^-1. how many grams of strontium-90 remain if 10.0g decay for exactly 60 years.
Stalactites--the long icicle, icicle like formations that hang from the ceilings of caves--are formed from recrystallizing minerals like calcite (calcium carbonate, CaCO3, 100.09 g/mol). The Ksp of calcium carbonate is 4.5 x 10^-9.
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