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What mass of magnesium, in reaction with hydrochloric acid, is needed to produce 128 mL of hydrogen (H2) gas? The H2 gas is collected over water at a temp. of 25 C and a total pressure (PBR) of 762 mmHg. The ideal gas law constant R=0.0821 L x atm/K x mol.
An oxidation-reduction reaction in which 3 electrons are transferred has a deltaG(standard)=+18.55 kJ at 25 C. What is the value of E(standard)
The lighter isotope has an abundance of 67.7%. Calculate the atomic mass of the element X.
A balloon vendor at a street fair is using a tank of helium to fill her balloons. The tank has a volume of 102 L and a pressure of 131 atm at 23 celsius
Explain both alkene and carbocation stability as it relates to hyperconjugation. - Explain how hybridization relates to alkene stability.
At room temperature a beaker of liquid measures 26 degree C. What is its temperature measured in Kelvin?
A mixture of propane and butane is fed into a furnace where it is mixed with air. The furnace exhaust leaves the furnace at 285°C, 761.0 mmHg and contains only N2, O2, CO2, and H2O.
A lab rat weighs 265g and absorbs 1.68x10^10 beta decay particles, each with ernegy of 2.20x10^-13 J. If relative biological effectiness is 0.75, what is the equivalent dose?
A gaseous mixture contains 420.0 Torr of H2(g), 391.3 Torr of N2(g), and 79.5 Torr of Ar(g). Calculate the mole fraction, X, of each of these gases.
Calculate the masses of the solid you must measure out to prepare 100mL EACH OF 0.025 M KNO3 , 0.025 M CuSO4, 0.025 M Ca(NO3)2, and 0.025 M KCl . include waters of hydration when clculating the formula wights.
a 11.7 ml sample of a hcl solution has a ph of 2.000. what volume of water must be added to change the ph to
How many moles of CO(NH2)2 are present in 150 g of water, if the freezing point of the solution is -4.02C? kf(water) = 1.86 K · kg/mol.
consider the reaction 4 fes 3 o2g rarr 2 fe2o3s.if 12.5 g of ironiii oxide rust are pro- duced from 8.74 g of iron how
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