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Question - A 7.0 g sample of a hydrocarbon (a molecule that has only hydrogen and carbon) is subject to combustion analysis. The mass of CO2 collected is 22.0 g. What is the empirical formula of the compound? Please show work
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Hydroxylamine, HONH2, readily forms salts such as hydroxylamine hydrochloride which are used as antioxidants in soaps. Hydroxylamine has Kb of 9.1 x 10^-9. What is the pH of a 0.025M HONH2 solution
Using a sample of 30.0 mL of Kr(g), is at 25°C and 756 mmHg. Calculate the new volume if the temperature is decreased to -125°C and pressure is decreased to 325 mmHg .
Calculate the molar solubility of iron sulfide in a solution that is saturated with hydrosulfuric acid, H2S ( [H2S] = 0.1 M) and has a pH of 2.0. Ka1 = 8.9 x 10^-8 and Ka2 = 1.2 x 10^-13.
Aluminum sulphate is used in sand paper, among other uses. How many g of aluminum oxide dihydrate will be needed to produce 500 g of aluminum sulphate by the (unbalanced) reaction below? Al2O3 •2H2O + H2SO4 Al2(SO4)3 + H2O
If an automobile is able to travel 242 mi on 12.0 gal of gasoline, what is the gas mileage in km/L
Draw the major organic product(s) formed when hex-2-yne undergoes hydration in the presence of HgSO4 and H2SO4.
If 3.55 g of CuSO4 are dissolved in 925 mL of 0.30 M NH3, what are the concentrations of Cu2+, Cu(NH3)42+, and NH3 at equilibrium Kf, Cu(NH3)42+= 1.1 x 1013 . Assume that most of the Cu2+ is converted to the complex since K is a very large number.
Concentrated sulfuric acid (18.3M) has a density of 1.84g/mL. how many moles of sulfuric acid are present per mL of solution
what is the solubility of helium in water at 30 ordmc if its partial pressure above the solution is 350 torr? the
how much of each solution do you need to prepare 1 L of buffer containing 20 mM glucose, 30 mM dihydrogen sodium phosphate, and arginine 1 mM? Explain in words how would prepare this solution.
In the determination of the formula KwFex(C2O4)y(H2O)z the stoichiometric point was surpassed in determining the oxalate ion concentration using permanganate ion as the titrant. If the iron (III) concentration was determined accurately,
Which of the following ideal aqueous solutions would be predicted to have the highest vapor pressure. 2.00 m MgBr2
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