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Balance equation. What is the percent yield if 122 grams of SiO2 are made from 246 g of Cr2O3 by the following equation? Si(s) + Cr2O3(s) - - - - > SiO2(s) + Cr(l)
At 131 celsius and 769 mmHg, 2.00 L of the gaseous compound weighs 4.44 g. What is the molecular formula for the compound?
A beaker with 1.30×102 mL of an acetic acid buffer with a pH of 5.000 is sitting on a benchtop. The total molarity of acid and conjugate base in this buffer is 0.100 M .
Calculate the equilibrium pH of a solution containing 5x10^-4 M Na2CO3 and 5X10^-4 M NaHCO3.
Calculate the pH of a buffer composed of .50 M formic acid (HCO2H) and .70 M sodium formate (HCO2-Na+) before and after the addition of 10.0 ml of 1.0 M HCL
Draw and name all dienes of molecular formula C5H8. When E and Z isomers are possible, draw and name each stereoisomer
in the reaction P4+5O2->2P2O5, how many moles of oxygen are consumed each time 0.500 mole of P2O5 is formed?
A 15.0-g sample of a hydrocarbon is placed in a balloon at 1.00 atm and 25°C, and the volume of the balloon is 12.2 L. The hydrocarbon is 79.89% carbon and 20.11% hydrogen by mass.
Calculate the equilibrium constant for the reaction
What is the maximum amount of O2 in grams that can be obtained from 2.00 x 102 g of nitroglycerin?
The most probable mechanism of reactivity for the solvoysis of 2-chloro-norbornane is: a. Sn1 b. Sn2 c. E1 d. E2 The reaction for this secondary compound was very slow going compared to solvolysis of benzyl chloride
Nitrogen oxides undergo many interesting reactions in the environment and in industry. Given the following information, calculate H for the overall equation
If you used 8,400 kilojoules you expend in energy in one day to heat 49,000 grams of water at 18 degrees celcius, What would be the rise in temp?, and What would be the new temp of the water?
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