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Consider a glass of 215 mL of water at 28°C. Calculate the mass of ice at -15°C that must be added to cool the water to 10°C after thermal equilibrium is achieved. To find the mass of water use the density of water = 1.0 g/mL.
If at 25 degrees celcius the partial pressure of oxygen in the iar diffusing through its cathode is 0.22atm, what is the cell potential (Ecell
if potassium bromide of 25.5 grams is dissolved in enough H 2 O to make 1750 mL of solution, determine the molarity of the solution?
How much CH4, in grams, is needed to produce 50.0 grams of CHCl3?
2NO+O2 makes NO2, what mass of NO2 is formed when NO reacts with 384g O2?, how many grams of NO are required to react with this amount of O2?
How much will the reaction speed increase if the concentration of NO is increased from exactly 0.35 moles/liter to exactly 1.51 moles/liter while the concentration of oxygen
How long would you need to sample from a concentration of 1000 PPM using a flow rate of 50 ml/minute to collect 100 mg of material?
The concentration of this compound in the sample is 0.000030 M and the path length of the sample is 1.0 cm
C6H5NH3Cl is a cation chloride salt with acid. If 37.1 g of C6H5NH3Cl are dissolved in water to prepare a 150 mL solution, which is the initial molarity of the cation?
A container consists of CO2 gas at a temperature of 15 C and at a pressure of .990 atmospheres. The volume of the container is 500 mL. How many grams of CO2 would be in the container?
Write an equation for the sequential hydroboration and H2O2/OH ¯ oxidation of 4-ethyl-3- heptene. Indicate the main monosubstitution products in each of the following reactions.
calculate the approximate concentration of the solution in mol/kg and determine the volume change of the ballon when it ascends from 1 atm pressure to 240 torr pressure ?
A 26.1 g sample of pure iron at 77°C is dropped into 93 g of water at 17°C. What is the final temperature of the water-iron mixture.
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