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A sample of ideal gas is in a sealed container. The pressure of the gas is 795 torr , and the temperature is 37 C . If the temperature changes to 95 C with no change in volume or amount of gas, what is the new pressure, P2, of the gas inside the container?
The atomic weight of a newly discovered element is 98.225 amu. It has two naturally occuring isotopes. One isotope has a mass of 96.780 amu.
Select the most important resonance structure for this species based on the formal charges on the atoms of the three resonance structures you have drawn. Now select the statement from the multiple choices which is true about this most important re..
How many grams of CH4 must be burned to release 554 kJ of heat based on this thermochemical equation:
When strontium bromide (SrBr2) is heated in a stream of chlorine gas, it is completely converted to strontium chloride
What is the value for the rate constant, k? What is the concentration of urea in this solution after 4700 seconds if the starting concentration is 0.495 M?
You are a laboratory assistant for your chemistry course. There are 250 students in the course, and each needs to use 25 mL of a 0.15 M solution of copper sulfate.
What mass of NO2 can be produced by the complete reaction of 45.00 g of ammonia with 94.00 g of oxygen
A 97.0 mL sample of 0.0200 M HCl is titrated with 0.0400 M RbOH solution. Calculate the pH after the following volumes of base have been added. (a) 22.3 mL pH = (b) 47.5 mL pH = (c) 48.5 mL pH = (d) 49.5 mL pH = (e) 94.1 mL pH =
Dry ice (solid ) has occasionally been used as an "explosive" in mining. A hole is drilled, dry ice and a small amount of gunpowder are placed in the hole, a fuse is added, and the hole is plugged.
If you have .200 mL of methyl salicyate (density=1.184 g/mL)(molar mass=152.15 g/mol) how many moles do you have?
Acid-catalyzed dehydration of an alcohol most closely resembles an E1 mechanism when secondary and tertiary alcohols are involved.
Consider the weak acid, with a Ka = (4.40x10^-4). In the titration of 25.00 mL of a 0.01000 M solution of the acid with 25.00 mL of a 0.01000 M solution of NaOH
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