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What mass of ethane gas (C2H6) must burn in excess oxygen to produce 2.00 x 103 kJ of heat, given the thermochemical equation
2C2H6(g) + 7O2(g) ? 4CO2(g) + 6H2O(l) ?H = -3.12 x 103 kJ
1.) 0.641 g 2.) 19.3 g 3) 38.6 g
4. heat is not produced by this reaction
5. none of these
Given the following equation, how many grams of PbCO3 will dissolve exactly when 1.5L of 1.00 M H+ is added to 5.00g of PbCO3? PbCO3 + 2H+ = Pb^2+ +H2O + CO2
distinguish between an organic molecule that is dextrorotary and one that is levorotary.
Given a mean free path, comment on the appropriateness of using the ideal gas law to determine the number density of a sample at a critical point.
A rectangular beam made using concrete with f'c = 6000 psi and steel with fy=60000 psi has a width b= 20 in. The concrete modulus of rupture fr=530 psi. The elastic moduli of the concrete and steel are, respectively,
What characteristic H NMR absorption would be expected in the aliphatic region for 9-hydroxyfluorene
Calculate the fraction of atoms in a sample of argon gas at 391 K that have an energy of 12.7 kJ
Kp for the reaction of SO2(g) with O2 to produce SO3(g) is 3 × 1024 . Calculate Kc for this equilibrium at 25ºC. (The relevant reaction is 2SO2(g) + O2(g) 2SO3(g).)
Sodium bisulfite solution is added to an experiment at the end in order to destroy the unreacted bromine. What reaction is occuring here? Is HSO3- acting as an oxidizing or reducing agent? Write a balanced equation.
a metal sample weighing 71.9 g and at a temperature of 100.0c was placed in 41.0 g of water in a calorimeter at 24.5c.
The heats of endothermic reactions are assumed the same as the heats of exothermic reactions, thus neglected for this estimation. The heat capacity of this woody biomass, 2.72 kJ/kg·?C, is assumed constant.
Define or give examples for the following terms using words and equations as necessary. If a symbol exists, write it along with metric units (kg, m, s, J, N, kJ, kPa, C, K, kmol, etc.)
How many grams of magnesium fluoride (MgF2) must be added to 67.3 g of water to prepare a 4.81% (m/m) solution of magnesium fluoride
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