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Heating MgSO4*7H2O at 150 degree Celsius produces MgSO4*xH2O. If heating 24.4 g of pure MgSO4 *7H20 were to give 13.7g of pure MgSO4*xH20, calculate the value of x.
how many moles of co(nh2)2 are present in 150 g of water, if the freezing point of the solution is -4.02 degrees c?
Problem- Robinson predicted a carbocation intermediate in the addition reaction of an alkene and CL2. What experimental evidence contradicts this mechanism
Calculate the volume of 1.70 m Na3104 in milliliters that contains 3.00 g of solute.
A 4.1089 g piece of aluminum wire with a circular cross section is 42.06 cm long and has a density of 2.6989 g/cm3 what is the volume of the wire in cm3
Predict the freezing point of a solution prepared by dissolving 8.9 g MgCl2 in 98 g H2O. Kf for water is 1.86 °C m-1. A) 3.5 °C B) -3.5 °C C) 5.3 °C D) -5.3 °C E) -0.51 °C
A hot air balloon occupies a volume of 978 L at a temperature of 27 °C. What is the temperature, in °C, if the volume is decreased to 873 L
Substance A has a greater molar mass then substance B. Both are nonelectrolytes. If 50 g of substance A are dissolved in 250 g of water in one beaker
Kc is 1.67x10^20 at 25*c for the formation of iron(III) oxalate complex ion: Fe^3+(aq)=3C2O4^2-(aq) >>>[Fe(C2O4)3]^3-(aq) If 0.0200 M Fe3+ is initially mixed with 1.00 M oxalate ion, what is the concentration of Fe3+ ion at equilibrium? Please sho..
Octane has a density of 0.692g/mL at 20 C. How many grams of O2 are required to burn 1.00 gal of C8H18?
If 164 of wet is collected over water at 24 degrees C and a barometric pressure of 737 Torr , how many grams of Zn have been consumed? (The vapor pressure of water is 22.38 Torr)
An aqueous KNO3 solution is made using 77.8g of KNO3 diluted to a total solution volume of 2.04L. A) Compute the molarity of the solution. Presume a density of 1.05 g/mL for the solution.
The pKa for the protonation of His to form HisH+ = 6.0. When pH = 7.0, what is the fraction of total histidine that will be in the HisH+ form?
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