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A student obtains 15.0 mL of 0.65 M phosphate solution and reacts it with excess ammonium and magnesium (Mg2+) under basic conditions. Upon reaction completion, she isolates and dries the product, and finds its mass to be 1.9426 g. Calculate the % yield
The combustion of liquid ethanol produces carbon dioxide and water. After 5.8 of ethanol (density = 0.789 ) was allowed to burn in the presence of 12.5 of oxygen gas, 3.10 of water (density = 1.00 ) was collected. Determine the percent yield for t..
Provide a balanced equation for the oxidation of the following: 2-propanol to acetone by means of Cr2O7-2/H+. Please show all steps to obtain the final balanced equation.
moles of benzoyl peroxide and another person used the same amount of benzoyl peroxide as the first person but only used 150 moles of styrene, what would be the average molecular weight of each groups polymer sample be?
Calculate the mass (in mg) of KCN needed to make 500. mL of aqueous KCN solution with a pH of 10.00.
n2 react with hydrogen gas to form nh3 if 14.01 g sample of n2 react with 4.07g of h2 determine how many of nh3 is
explain the advantages and disadvantages of using high gold content bonding alloys when constructing bonded porcelain
Explain what is the half-life of Ba-137m. Explain what fraction of activity remains after 6.25 minutes? (A=Aoe (-kt); k = .693/t1/2)
a 20 ml solution of ti2 40 mm can be oxidized by reacting with iron ions from fecl3. a titration is performed with a
Calculate the work done if a gas is compressed from 7.7 L to 1.3 L at constant temperature by a constant pressure of 2.6 atm, and give your answer in units of joules. (1 L · atm = 101.3 J) J In the above example, work is being done by what?
Calculate the pH of 0.300 L of a 0.500 M NaHSO3 / 0.300 M Na2SO3 buffer before and after the addition of the following solutions. Assume that the volume remains constant.
You are designing a drier that must evaporate 200 lb/h of H2O from sludge by using air. Air at 70°F and 50% relative humidity is drawn into the drier and it leaves at 140F and 70% relative humidity. How much volume of dry air needs to be used for ..
57.0 mL of a 1.80 M solution is diluted to a volume of 238 mL. A 119-mL portion of that solution is diluted using 117 mL of water. What is the final concentration.
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