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Consider a steel containing 0.6% carbon and 10% chromium. Estimate the eutectoid temperature and concentration. What is the proeutectoid phase?
Calculate the amount of heat liberated (in kJ) from 417 g of mercury when it cools from 64.0°C to 12.0°C.
The half-life of U-235 , an alpha emitter, is 7.1x10^8yr. Calculate the number of alpha particles emitted by 5.1mg of this nuclide in 3.0 minute.
when performing a friedel-crafts alkylation reaction not only does one have the problems of multiple alkylation and
1.3 Kg of Ethane gas (C2H6 ) was heated from 27.0 degree Celsius to 78.0 degree Celsius. Calculate delta E at constant pressure. ( Cp= 52.92 j / K mol)
The temperature of a sample of water increases from 21.9°C to 45.3°C as it absorbs 5669 J of heat. What is the mass of the sample.
A flask contains 10.0 mL of HCl and a few drops of phenolphthalein indicator. The buret contains 50.0 mL of 0.230 M NaOH. what volume of NaOH is needed to reach the end point of the titration
The decomposition of carbon disulfide, CS2 to form carbon monosulfide, CS and sulfur is first order with k = 2.8 x 10^-7 / second at 1000 degrees C. CS2 => CS + S determine how many days would be needed before a 1.00 gram sample of CS2 had decompo..
1. How large (in kg) an oxygen candle (KClO3) would be needed to supply 8 people with enough oxygen for 24 hours on a small submarine. The average person needs .84 kg of O2 per day.
Calculate the mean percent of hydrogen peroxide when three determinations were 3.03% , 2.89% and 3.22%
The reaction between hydrochloric acid and zinc metal produces hydrogen gas and zinc chloride. If 50g of each hydrochloric acid and zinc are mixed
assign oxidation numbers to all the elements in each of the following compounds or polyatomic ions: a)C2H3O2^- b)AlCl3 c)NH4^+ d)HBrO4
a 7.5- sample of hydrogen gas completely reacts with 60.0 of oxygen gas to form 67.5 of water. is the following data
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