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Consider the combustion of ethylene, C2H4(g)+3O2(g)?2CO2(g)+2H2O(g). If the concentration of C2H4 is decreasing at the rate of 3.5×10?2M/s , what is the rate of change in the concentration of CO2?
What is the rate of change in the concentration of H2O?
The rate of decrease in N2H4 partial pressure in a closed reaction vessel from the reaction N2H4(g)+H2(g)?2NH3(g) is 80torr/h . What is the rate of change of NH3 partial pressure in the vessel?
What is the rate of change of total pressure in the vessel?
Which will experience the greater effective nuclear charge, the electrons in the n=3 shell in Ar or the n=3 shell in Kr? Which will be closer to the nucleus?
What is the recommended daily allowance (RDA) of calcium, in mg, assuming a 2000 calorie diet for a 25 year old adult? A student carries out part 1 of this experiment and finds the equation for his/her calibration curve to be
a solution is prepared by adding enough water to 387 g of CsCl to form 1 liter of solution. What is the mass of the solution? the density of the solution is 1.384 g/mL.
A mixture of 2.20 moles of gas A and 5.81 moles of gas B has a total pressure of 0.794 atm. What is the partial pressure of each component?
if the density of mercury is 13.6g/cm3, what will be the volume of 300g of mercury ?
Draw the structural formula of Val-Ala-Leu. Draw the molecule by placing atoms on the grid and connecting them with bonds. Include all hydrogen atoms
In the acid-catalyzed dehydration of alcohols, an alkene and water are the reactions products. What method of separation has been used in order to collect samples
Which compound is most likely to dissociate and give O2(g) at 25?C?
What are the average calories (not Calories) per gram for each of your food items?
suppose the hydrate was heated too quickly and some of it was lost as it spattered out of the container . explain how this would effect .
when 31 mL of 0.200 M HCl has been added to 39 mL of 0.0500 M NH3 solution? HCl is strong acid, Kb = 1.8 × 10-5 for NH3
How many grams of KNO3 are needed to make 450 mL of a solution that is to contain 5.50 mg/mL of potassium ion? Calculate the molarity of the solution.
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