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How many kilocalories of heat are released when 75g of steam at 100 celsius is converted to ice at 0 celsius. If you want to lose 1 pound of fat, which is 15% water, how many kilocalories do you need to expand?
Assume that the H2O2 solution has a density of 1.0g/cm3. What would the mass of 35cm3 of the H2O2 solution be?
Describe how chemical labeling and crystal structures can be used to determine residues important
Express the concentration of 3 % H2O2 solution as molality and in a mole fraction. Explain the meaning of the mole fraction.
A chemist wanted to determine the concentration of a solution of lactic acid, HC3H5O3. She found that the pH of the solution was 2.49. What was the concentration of the solution? The Ka of lactic acid is 1.4 10-4.
explain if you can use an integrated rate law to find the orders of each reactant in a reaction with more than one reactant
What is the composition of the vapor of a pentane-hexane solution that has a vapor pressure of 411 torr at 25C
Draw three six-carbon alkenes, each of which forms the same product whether it reacts with HBr in the presence of a peroxide or with HBr in the absence of a peroxide,
If a 1-mole sample of a real gas from a compressed gas cylinder goes from 230 atm to 1 atm and from a volume of 1cm3 to 195cm3, what is the entropy change for the expansion if it is assumed to be isothermal.
Explain the significance of a horizontal line connecting point on the lower curve with a point on the upper curve
Calculate the pH after the addition of a total 20.0, 30.0, and 70.0 ml of NaOH has been added.
Transesterification of a certain triglyceride produced one molecule of methyl oleate and two molecules of methyl linoleate. Draw the original triglyceride.
assuming the density of water is 1.00gml at ambient temperature what is the exact volume in ml of teh 250-ml erlenmeyer
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