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How many moles of methane (CH4) are required to react completely with 139 L of carbon tetrachloride according to the following reaction at 0 C and 1 atm?
methane (CH4) (g) + carbon tetrachloride (g)-------- dichloromethane (CH2Cl2) (g)
Express the rate of the following reaction equation in terms of the rate of concentration change for each of the three species involved: 2NOCl (g) = 2NO (g) +Cl2 (g)
36.45 mL of 0.11 M hydrochloric acid were added to 36.45 mL of 0.098 M aqueous barium hydroxide. Calculate the theoretical yield of the salt produced.
Benzene has a heat of vaporization of 30.72 kJ/mol and a normal boiling point of 80.1 C. At what temperature does benzene boil when the external pressure is 480 torr?
The burning of sufficient magnesium in oxygen to form 2.00 grams of magnesium oxide results in the liberation of 30.1 kj.
An element crystallizes in a face-centered cubic lattice. The edge of the unit cell is 392 pm, and the density of the crystal is 21.45 g/cm3. Calculate the atomic weight of the element (in g/mol)
15.0 mL of 0.50 M HCl is added to a 100.-mL sample of 0.496 M HNO2 (Ka for HNO2 = 4.0 × 10-4). What is the equilibrium concentration of NO2- ions?
Once the reaction is complete, the student collects 1.23g of aspirin. Determine the theoretical yield and percent yield of aspirin.
What is the velocity of a first-order reaction when the reactant concentration is 6 x 10-2 M and the rate constant is 8 x 103 sec-1?
A 0.1000M solution of ethanoic acid (HC2H3O2) is only partially ionized so that [H+]=2.25X10^-3M. What is the acid dissociation constant for this acid?
How much heat is required to warm 231 g of ice from -45.1°C to 0.0°C, melt the ice, warm the water from 0.0°C to 100.0°C, boil the water, and heat the steam to 173.0°C
that of the Ce(III)/Ce(IV) system is +1.44V, calculate the potential at the following points during the titration of 100 ml of 0.05M Fe(II) with 0.05M cerium (IV)
From there, how would I find the moles of salicylic acid in aspirin sample (mol) and the mass of salicylic acid in aspirin sample (g), which should help me calculate the percent purity of aspirin and the percent yield of aspirin in sample. Thank y..
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