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Draw a Lewis structure for each of the following molecules, and then use the VSEPR theory to predict the molecular deometry of each:
a) SCl2c) Cl2Od) NH2Cle) SiCl3Brf) ONCl
Liquid sodium is being considered as an engine coolant. How many grams of liquid sodium (minimum) are needed to absorb 6.10 MJ of energy (in the form of heat)
Caffeine is made up of 49.5% C, 5.2% H, 16.5%O, and 28.9% N. A solution made up of 8.25g of caffeine and 100.0 of benzene (d=0.887g/ml) freezes at 3.03C. Pure benzene (kf=5.10 degrees C/m) freezes at 5.50C.
What is the molar mass of this substance, express your answer in g/mol and determine the moloar concentraitions Cr 2 O 7 ^2 and of K + ?
A compound is analyzed and found to contain 12.1% carbon, 16.2% oxygen, and 71.7% chlorine (by mass). Calculate the empirical formula of this compound.
the balloon reaches an altitude of 100m, where the pressure was 658 mmHg and the temperature was -8c. what was the volume in liters of the ballon at these conditions?
Sulfuric acid (H2SO4) is a very strong diprotic acid. If 0.076 moles of sulfuric acid is mixed with water to make 670 mililiter of solution, what is the molarity of H+?
A sample of gas is collected over water at a temperature of 35.0?C when the barometric pressure reading is 625 torr. What is the partial pressure of the dry gas, given PH2O = 42.2 torr?
The extrapolated literature value of KEQ for the formation of FeNCS^2+ at 25 degrees C and zero ionic strength is 1047. Predict the equilibrium concentration
When C2H5OH +3O2 produces 2CO2 + 3H2O,determine how many grams of oxygen gas are essential for complete combustion of 421grams of ethanol ?
Calculate the enthalpy change for converting 1.00 mol of ice at -50.0°C to water at 70.0°C in kJ. The specific heats of ice, water, and steam are 2.09 J/g-K, 4.18 J/g-K, and 1.84 J/g-K, respectively. For H2O , Hfus = 6.01 kJ/mol, and Hvap = 40.67..
If we add a solid aluminum cylinder to a graduated cylinder containing 19.2 mL of water, and the water level in the cylinder rises to 24.7 mL, what is the mass of the aluminum cylinder?
Consider a 75.0g sample of H2O(g) at 125C. What phases are present when 215kJ of energy is removed from this sample?
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