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Solid white phosphorous melts then vaporizes at high temperatures. gaseous white phosphorus effuses at a rate that is .404 times that of neon in the same apparatus under the same conditions. how many atoms are in a molecule of gaseous white phosphorus?
A sample of water 53 g with a temperature of thirty six degree celsius is combined to 250 grams of H 2 O at 91 degree Celsius in an insulated container. Determine the final temperature after thermal equilibrium is reached?
when a 6.00-g sample of kcn is dissolved in water in a calorimeter that has a total heat capacity of 3.850 kjmiddotk-1
suppose that a 5.0X10^-5 M solution of Ba(OH)2 is prepared. What is the pH of the solution?
Calculate the molar solubility of Fe(OH)2 in a buffer solution where the pH has been fixed at the indicated values. Ksp = 7.9 x 10-16. (a) pH 7.0 M (b) pH 11.0 M (c) pH 13.6 M
Each hemoglobin combine with 4 O2. If 1.02 g of hemoglobin combine with 1.6 ml of O2 at 37degree c and 724torr. What is the molar mass of Hemoglobin
Calculate the concentration of the potassium ion in grams per liters after mixing 100ml of KCL 0.250 M and 200 ml of K2SO4 0.100 M.
How many minutes would a 5.00 ampere current have to be applied to plate out 8.00g of copper metal from an aqueous solution of Copper (II) Sulfate
the pressure of 6.0l of an ideal gas in a flexible container isdecreased to one-third of its original pressure and its
How many joules of heat are required to heat 143 g of aluminum from 55.0 oC to 66.5oC?
A sample of air at 15 psi is compressed at constant temperature from 555ml to 275ml. Calculate the resulting pressure.
Calculate the pH of the solution made by adding 0.50 mol of HOBr and 0.30 mol of KOBr to 1.00 L of water.
Given the information below, what is the value of the unknown equilibrium constant?
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