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in a calorimeter, 28.15 J of heat is released. What is the molar mass of the compound?
Describe how would you determine if combination of the cork and lead cube will still float in the water
5. If both reactants have the same measurement, which statement is correct?
A. There is a limiting reactant in the reaction.
B. Only excess reactant will exist in the reaction.
C. Both limiting and excess reactant can be calculated.
D. There is no excess and limiting reactant in the reaction.
Graham's law says that gas will effuse at a rate that is inversely proportional to the square root of its molecular mass, MM. Expressed mathematically:
rate1/rate2 = √MM2/MM1
solve:
- Under the same conditions of temperature and pressure, how many times faster will hydrogen effuse compared to carbon dioxide?
- If the carbon dioxide in Problem 1 takes 32 seconds to effuse, how long will the hydrogen take?
- what is the relative rate of diffusion of NH3 compared to He? Does NH3 effuse faster or slower than He?
Calculate the percent yield of this expirement if a mass of 1.982 grams of manganese (IV) oxide is produced.
Calculate the mass of manganese (IV) oxide that can be synthesized from 15.00 grams of potassium iodide.
After the expirement is performed, an experimental yield of 183.2 grams produced. Calculate the percent yield for this expirement
a company consumes 12000 units of a raw material. the company has a production capacity of 60 units/day, the cost of each unit produced by the company is $8. the setup and tooling up cost is $96 per set up. the capacity charges are 15% of cost per uit. Determine how frequently the production runs be made
Calculate the theoretical yield of vanadium oxide, assuming you begin with 200.00 grams vanadium metal.
1. A 10.0-liter flask contains 0.400 mole of H2, and 0.300 mole of N2 at 20°C.
(a) What is the pressure, in atmospheres, inside the flask?
(b) Calculate the mole fractions of the three gases?
