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Would the percent of KClO3 (sample 1:64.287% , sample 2:71.68%) be too large or too small if the system was not permitted to cool before the pressures were equalized?
When CO2 is bubbled through an ether solution of benzylmagnesium bromide, and the resulting mixture is acidified, phenylacetic acid is produced.
Understanding of chemistry basics - which of the following is not changed by the activity of an enzyme during a chemical reaction?
25.0 mL of ethanol (density = 0.789 g/mL) initially at 7.4°C is mixed with 32.1 mL of water (density = 1.0 g/mL) initially at 25.3°C in an insulated beaker. Assuming that no heat is lost, what is the final temperature of the mixture?
A 25-g sample of an alloy at 98 C is placed in 50. g water at 17 C: If the final temperature reached by the alloy sample and water is 27 C, what is the specific heat (cal/gC) of the alloy?
State how much oxalate unknown should the student weigh out in order to use 35.0mL of permanganate solution?
An experiment requires 46.0 of ethylene glycol, a liquid whose density is 1.114 . Rather than weigh the sample on a balance, a chemist chooses to dispense the liquid using a graduated cylinder.
What is the [OH-] in a solution that has a [H3O+] = 1 x 10-6 M?
a solution is made by dissolving 20.0 mL CH3CN. what is the mole fraction of methanol in the solution?
describe how these limestone objects are corroded by the sulfuric acid in polluted air. What chemical reaction is involved here?
State the chemical reaction that took place in the patient's body.
One of the nobles gase of group was isolated in 1894 by allowing a large volume of air to react with magnesium so that the only noble gas, contaiminated with tracs of other noble gases,
Suppose a hydrogen-oxygen fuel-cell generator was used to produce electricity for a house. Use the balanced redox reactions and the standard cell potential to predict the volume of hydrogen gas (at STP) required each month to generate the electric..
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