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1. Describe the assumptions behind the air standard cycle. Which are the most severe and which are the least severe?
2. Describe what you see as future refrigeration needs in the next 100 years (i.e., what will the refrigeration need be 100 years from now, in your opinion)?
Compute the time (in hours) needed for the concentration of butadiene to decrease from an initial concentration of 0.0200M to a final concentration of 0.002M.
A sample of 0.50 moles of O2 gas initially at 250K and a pressure of 1.0 atm is compressed to final pressure of 12 atm. The compression can occur via two different paths
Consider the reaction 2MnO2+2KOH+O2 ---->2KMnO4+H2. If 72 grams of manganese dioxide,65 grams of potassium hydroxide and 53 grams of oxygen are introduced into a reaction vessel, which is the limiting reactant
given that is the central atom draw a lewis structure of in which the formal charges of all atoms are zero.nbspdraw the
Explain how to prepare 0.250 L of a 0.500 M CuSO4 solution. 1. Measure out 0.500 moles of CuSO4 solid 2. Measure out 20.0 g of CuSO4 solid 3. Measure out 0.500 moles of CuSO4 solid and add water until a volume of 1.0 L is reached 4
The solubility of Ag2CO3 in water is 2.58e-4 moles in 2 liters at 25 degrees celcius. What is the value of Ksp for Ag2CO3
(a) In the electrolysis of aqueous Na2C2O4, how many liters of CO2(g) (at STP) are generated by a current of 89.9 A for a period of 53.0 min? The unbalanced chemical reaction representing this electrolysis is shown below.
C2H5OH solution has a density of 1.01 g/mL. Calculate the molarity of the C2H5OH solution
A 248 gas sample has a mass of 0.433 g at a pressure of 745 mm Hg and a temperature of 28 C. What is the molar mass of the gas?
Each atom in HF has a fractional charge of 0.416. What is the dipole moment of HF? 2. Which of the following molecules has a dipole moment? 3. Of the ions below, which ion has the smallest atomic radius?
write a chemical equation for the oxidation of ethane gas to form water vapor and carbon dioxde gas. define this as the
A helium balloon at a high altitude has 2.1 × 104 L of helium at 0.40 atm and -13°C. If the balloon descends to an altitude in which the atmospheric pressure is 1.00 atm and the temperature is 20°C.
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