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The mass percent of an element in a compound is the mass of the element (total mass of the element's atoms in the compound) divided by the mass of the compound (total mass of all atoms in the compound) times 100%. What is the mass percent of each element in acetaminophen?
Calculate the molarity (mol/L) of CO32- when SrCO3 is placed in a 0.0340 M SrCl2 solution. The equation represents the solubility process.
When an interfering substance M is present, a fluoride ion selective electrode obeys the following modified response equation
Sodium nitrate decomposes upon heating to form sodium nitrite and oxygen gas. This reaction is sometimes used to produce small quantities of oxygen in the lab. How many grams of sodium nitrate must be heated to produce 128g of oxygen?
If 348 grams of K2SO4 (molar mass 174 grams) is dissolved in enough water to make 500 milliliters of solution, what are the concentrations of the potassium and sulfate ions.
The complete conversion of 2-phenylacetic acid to ethyl-2-phenylacetate in this experiment is the result of. Ethanol being in excess relative to 2-phenylacetic acid
A 0.1510 gram sample of hydrocarbon produces 0.5008 gram CO2 and 0.128 gram H2O in combustion analysis. Its molecular weight is found to be 106.
Use the balanced equation to calculate how many mL of 0.15M KOH solution will be needed to completely react with 15.0 mL of a 0.20M H2SO4 solution
Calculate the volume of 1.0 x 10-4 M CV+ solution that needs to be added to a 25.0 mL volumetric flask and diluted with deionized (DI)
n evacuated 1.00L gas bulb was filled at STP with 1.34g of an unknown hydrocarbon, which was then burned in excess oxygen, completely converting it to Carbon dioxide and 2.41 g of water. What is the molecular formula of the hydrocarbon
a 2.5-l sample of a 6.3m nacl solution is diluted to 75l.what is the molarity of the diluted
If 159 of wet is collected over water at 24 and a barometric pressure of 739 , how many grams of have been consumed? (The vapor pressure of water is 22.38 .)
Write the reaction between Fe3+ and SCN- in which [Fe(SCN)3] forms. b) Determine the equilibrium expression for K associated with this reaction
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