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The products formed in several reactions are given below. Identify the reactions (labeled x and y) and write the complete balanced equation for each reaction. a) x + y -> (NH4)2SO4(aq) b) x + y -> Mg(NO3)2(aq) + CO2(g) + H2O(l) c) x + y -> BaSO4(s) + NaCl(aq) d) x + y -> NH4{+}(aq) + OH{-}(aq)
If gasoline's composition is estimated to be 50% octane, 25% pentane and 25% ethly benzene on a mol basis, calculate the mols of oxygen required per mol of fuel for complete combustion.
A 1.50 mole sample of an ideal gas at 28.5 degrees C expands isothermally from an initial volume of 22.5dm^3 to a final volume of 75.5dm^3
The nitrate concentration in an industrial effluent is determined using a nitrate ion selective electrode. Standards and samples are diluted 20-fold with 0.100 K2SO4 to maintain consatnt ionic strength.
The volume of oxygen collected over water is 226 mL at 25°C and 503.0 torr. Calculate the dry volume in milliliters of oxygen at STP.
A steel tank has a volume of 438 liters and is filled with 0.885 kg of Oxygen. Calculate the pressure of oxygen at 21 degrees Celsius.
A mixture of 30 mol% CO, 65 mol% H2, and 5 mol% N2 is fed to a methanol (CH3OH) synthesis reactor, where the following reaction occurs
at 25 C, a sample of NH3(molar mass= 17g/mol) effuses at a rate of .050 mole per min. under the same conditions, which of the fallowing gases effuses at approximately one-half that rate
what elutes from the column when etc. Why do you think you use extraction techniques instead of chromatography?
Hydrogen bromide adds to the triple bond with a regioselectivity dictated by Markovnikov's rule. One mole of HBr adds to one mole of 1-heptyne.
Calculate the amount of heat liberated (in kJ) from 383 g of mercury when it cools from 61.0°C to 11.0°C.
A 99.8mL sample of a solution that is 12.0% KI by mass(d=1.093g/mL) is added to 96.7mL of another solution that 14.0%Pb(NO3)2 by mass (d=1.134g/mL). How many grams of PbI2 should form.
When 2.45 g of an unknown weak acid HA with a molar mass of 85.0g /mol is dissolved in 250.0g of water, the freezing point of the resulting solution is -0.256 C.
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