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Explain how much heat, in kJ is evolved in converting 1.70 mol of steam at 145 degrees Celsius to water at 95 degrees Celsius. Explain the heat capacity of steam is 2.01 J /g * C the heat capacity of water is 4.18 J / g * C, the heat capacity of ice is 2.09 J / g * C as well as the heat of vaporization of water at 100 degrees Celsius is 40.7 kJ / mol. Utilize three sig figs for your answer as well as just type in the number that is, neglect sign.
Suppose 5.00g of Ca is added to 50.0mL of 1.00M HCL. Determine the limiting reactant in this case and number of moles of calcium actually consumed.
Suppose you did the bromination of cholesterol using bromine in DMSO(dimethyl sulfoxide)/H2O mixture (instead of acetic acid). What product(s) would you get?
What information does a chemist obtain from the mass spectrum of a compound?
A cube of metal has a mass of 0.321 kg and measures 3.05 cm on a side. Calculate the density and identify the metal.
What mass of NO2 can be produced by the complete reaction of 48.00 g of ammonia with 95.00 g of oxygen
What is the percent ionization of a solution made by adding 6.00 grams of CH3COOH to 100 g of water (Kb = 0.512 ?C/m) if the boiling point of the solution is 100.712 ?C? Answer in units of %.
A solution contains 100.0 g of water,10.0 g NaCl,and 15.0 g methanol. what is the weight(mass) percent of methanol in the solution
Explain whether or not each coefficient is significantly different from zero.
Explain what is the expected geometry of SO2. (S is the central atom). Depict the Lewis structure. SO2 can act as a Lewis acid as well as the fluoride anion can act as a Lewis base. Depict the Lewis structure that you expect when they combine. Expl..
How many grams of potassium chloride will be generated on decomposition of 225 grams of potassium chlorate?
Based on the results of your tests you have find out chemical formula for copper (II) sulfide. Define how you determined this from the excess reagents as well as the amount of precipitate formed in the lab.
Predict whether the following reactions will occur or not. For those that do occur complete and balance the equation. Write N.R. for those that do not occur. Include all subscripts (e.g., (S), (aq), etc.)
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