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Answer the following questions, in a total of 350 to 700 words.
calculate the heat change at 100 degrees Celsius and indicate whether heat was absorbed or released: a) joules to condense 10.0 g of steam; b) kilojoules to condense 76.0 g of steam; c) joules to vaporize 44.0 g of water; d) kilojoules to vaporize..
What is the theoretical yield of ammonia in grams that can be prepared from 41.0 g of nitrogen and excess hydrogen
calculate the Kf for the solvent bromoform: When 28.2 g of C20H42 are dissolved in 173. mL of bromoform, the freezing point of the solution is 5.4 C.
Calculate the energy needed to convert 50.0 g methane (CH4) from a solid at -100 C to a liquid at 25 C
Draw lewis Dot structures. Use model kits, styrofoam balls and/or gum drops to make a model of the molecule or ion. Be sure to place electron groups (toothpicks or sticks) as far apart as possible.
a student has sample of hno3 of 340 ml at 25 degrees celsius and add water of 110 ml at 95 degrees celsius then
100.0g of Cl2O7 are mixed with excess of water obtaining 136.0g of periodic acid according to the following reaction. Determine the percent yield of HClO4. Cl2O7 + H2O ? 2HClO4
The initial pH. the volume of added base required to reach the equivalence point the pH at 12.0 mL of added base
Potassium hydrogen phthalate (KHP) is used as a primary standard acid to accurately determine the molarity of a NaOH solution via a titration. The formula of KHP isKHC8H4O4 and has a molar mass of204.23 g/mol.
A sample of chlorine gas in confinedin a 5.9L container at 220. torr and 27 degrees Celsius. How many moles of gas are present in the sample?
We have one mole each of the starting reactants in a 50-L reaction vessel. The equilibrium constant K is 0.58 at 1000 degrees Celsius. How many moles of each substance are in the equilibrium mixture. Also, calculate the Kp for this reaction. Pleas..
Complete and Balance the following redox equation. MnO4 + H +Br-->Mn2 +Br2 +H2O (acidic Solution). The sum of the smallest whole number coefficients is
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