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What is the molar mass of 35 g of an unknown substance that depresses the freezing point of .350 kg of water .50°C? Kf for water is 1.86C/m.
N2O4(g) + KCl(s) → NOCl(g) + KNO3(s) Find out oxidation number of each and find which one is reduced and which one is oxidized by Using oxidation number concept? Also write net ionic equation and ionic equation.
The compound NOCl decomposes to nitric oxide and chlorine according to the following equation: 2 NOCl (g) ? 2 NO (g) + Cl2 (g) Suppose that 0.420 mol NOCl is placed in a 3.00-L flask at a given temperature
How many grams of NaOH are in a 225.0 mL sample of a 2.5 M solution of NaOH? (Molar mass of NaOH is 40.0 g/mol)
If 160 mL of wet h2 is collected over water at 24 degrees Celsius and a barometric pressure of 738 torr , how many grams of Zn have been consumed? (The vapor pressure of water is 22.38 torr.)
The temperature of a 2.o-liter sample of helium gas at stp is increased to 27 degrees Celsius and the pressure is decreased to 80kpa what is the new volume of the helium sample?
Determine the value of the solubility-product constant if solubility of T3U2 =4.24× 10-20 mol/L.?
What pressure will the evolved carbon dioxide produce when 184.5g of calcium carbonate decomposes in a 20.00L container at 22.4 deg celsius?
calculate the pH a solution that contains 0.800% C5H5N by mass and 0.815% C5H5NHCl by mass
The ballon ascends to and altitude where the pressure is 504 mmHg and temperature is -34degree celcius . What is the volume of the ballon at this altitude
Calculate the molar mass of maltose (which is not an ionic compound). (b) The density of the solution is 1.014 g/mL. Calculate the osmotic pressure of the solution.
Calcuate the molalities of MgSO4, Mg2+, and SO4 in a 0.05000m solution of MgSO4 at 25 degree and at 250 degree. Find the appropriate log K's in Soltherm
Compute the boiling point elevation of a salt water solution that contains 5.90 g of NaCl dissolved in 109 ml of water. Enter the number of degrees celsius that the boiling point will be elevated.
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