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A gas made up of atoms escapes through a pinhole 0.552 times as fast as Ar gas. Write the chemical formula of the gas.
What volume and mass of steam at 100.°C and 1.00 atm would, during condensation, release the same amount of heat as 100. cm3 of liquid water during freezing.
A zero-order reaction has a constant rate of 2.40×10-4 M/rm s. If after 80.0 seconds the concentration has dropped to 7.00×10-2 M,
If the percent yield of 3NO2 + H2O yields 2HNO3 + NO is 75.0 percent and 45.0 grams of NO2 are consumed in the reaction, how many grams of HNO3 are produced?
What steps do you think need to be taken to prepare the blood sample so that it will be amenable to this type of analysis?
In the laboratory a student combines 26.4 mL of a 0.182 M potassium bromide solution with 17.2 mL of a .329 M potassium bromide solution. What is the molarity of KBr in the final solution
A standard hydrogen electrode is immersed in an acetic acid solution. This electrode is connected by an external circuit to an iron nail dipping into 0.10 M FeCl2. If Ecell is found to be 0.24 V, what is the pH of the acetic acid solution
product and propose a mechanism when 1-pentene reacts with bromine and water followed by the addition of sodium hydride.
You have a choice of a p-20 ,p-100,p-200,p-1000,a 1mL serological pipette , and a 5mL serological pipette. Which one(s) would you choose to make this standard and why? Explain how you would calibrate the pipette(s) you choose.
A first order reaction has a rate constant of 0.342 sec^-1 at 29.5 degrees C. If the activation energy is 69 kJ, calculate the temperature in degrees C at which the rate constant is 0.428 sec^-1.
Draw a Lewis structure for each of the following molecules and determine its molecular geometry. What kind of intermolecular forces are present in each substance?
The silicon in the plate is a mixture of naturally occurring isotopes. One of the those isotopes is silicon-30, which has an atomic mass of 29.97376 and a percent natural abundance of 3.10.
What volume (in mL) of 0.566 M solution of potassium hydroxide can be made from 58.9 mL of a 1.87 M solution? Assume the volumes are additive.
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