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Write the molecular formula for given compounds and determine the amount of molecules present.
For each of the following, name the compound or write the molecular formula and determine how many grams of each you have.
9.24 x 10-8 molecules N2O3
71.951 moles copper (I) sulfate
6.139 x 1017 moles Cr2(SO4)3
2.3024 x 1021 molecules lead (II) cyanide
20.0481 moles C2H4O2
A sample of 2.50 mole N2 is originally confined to 20 L at 270 K and then undergoes adiabatic expansion against a constant pressure of 600 Torr until the volume has tripled. Calculate q, w, ?T, ?U, and ?H.
upon evaluating the contents of a solution, declared that it was a 32 molar solution of ethanol in water. Why is this incorrect?
Consider a 15.0 mL sample of a ternary mixture composed of 25% (by volume) octane, 35% chloroform and 40% 2-propanol. Use the following information to convert volume composition to molar composition:
With respect to the corrosion of steel in concrete, explain the significance of the following terms: carbonation of concrete, passivity of steel, electrical resistivity of concrete, state of oxidation of iron.
you need 100.00 ml of h2o and 5.00 ml of liquid plant food to make a solution for your plants. you forgot to bring a
Firefly luciferase is the enzyme that allows fireflies to illuminate their abdomens. Because this light generation is an ATP-requiring reaction, firefly luciferase can be used to test for the presence of ATP
What happens when you mix Calcium Nitrate and Sodium Carbonate? What is the precipitate it forms?
Calculate the pH at the equivalence point in the titration of 56 mL of 0.10 M methylamine (see Table 15.4) with a 0.20 M HCl solution.
A 25.72 mL sample of a 0.200 M solution of barium nitrate is mixed with 11.19 mL of a 0.250 M solution of potassium sulfate. Assuming that all ionic species are completely dissociated
The equilibrium constant, Kc, for the following reaction is 1.29E-2 at 600 K: COCl2(g) CO(g) + Cl2(g)
12.0 moles of a gas (SO2) under non-ideal conditions was measured to have a pressure of 1.00*10^2 atm in a 3.00 L container. What is the temperature. the van der Waals constants for SO2 are a= 6.865L atm /mol and b=0.05679L/mol.
Determine the heat that must be extracted to cool the gas from 375 C to 275 C at (a) Constant Pressure and (b) constant volume.
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