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Why do oxyacids become stronger when more oxygens are added? (as in the case of HNO2 being much weaker than HNO3)
Table salt and sugar are accidentally mixed A 4.90 g sample is burned and 2.20-g of CO2 is produced What is the mass percentage of salt in the mixture?
What is the molarity of a solution that is 7.00% by mass magnesium sulfate and has a density of 1.071.
Calculate the molarity of a solution of glycerol made by dissolving 66.000 mL glycerol at 15 ^circ {rm C} in enough water to make 400.00 mL of solution.
How many milliliters of 0.200 M FeCl3 are needed to react with an excess of Na2S to produce 1.38 g of Fe2S3 if the percent yield for the reaction is 65.0%? 3 Na2S(aq) + 2 FeCl3(aq) ? Fe2S3(s) + 6 NaCl(aq)
The quantity of acetylene (HC+CH) in a gas mixture was measured by mass spectrometry, in which the signal for mass number 26 is proportional to the volume percent of acetylene. Gas Signal (mV) Blank containing no acetylene 0.2
What is the principle quantum number for the inner transition metals? (the atomic numbers are 57 through 102, called the lanthanide series
An additional atm pressure of HI is admitted to the con- tainer, and it is allowed to come to equilib- rium again. What is the new partial pressure of HI?
Enough of a monoprotic acid is dissolved in water to produce a 0.0194 M solution. The pH of the resulting solution is 6.26. Calculate the Ka for the acid.
a soulution is prepared by mixing 25.0ml of .100M HCL and 2.00mL of .200M NaCl. what is the molarity of the chloride ion solution
draw an electron-dot structure for acetonitrile, c2h3n, which contains a carbon-nitrogen triple bond. how many electrons does the nitrogen atom have in its outer shell? how many are bonding, and how many are nonbonding
When a ketone is treated with LiAlH4 followed by addition of water, what general class of product results?
You are given 2.72 g of salicylic acid. Using the procedure in the lab manual for the synthesis of aspirin, you recover 0.96 of aspirin. Calculate your percent yield of aspirin.
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