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A student didn't notice that her pipet tip was broken. She used the pipet properly but it consistently delivered 4.70 mL of vinegar instead of the desired 5.00 mL. How would the percent by mass results obtained have been affected? Explain your answer.
A bottle of wine contains 12.5% ethanol by volume. The density of ethanol is 0.789 g/cm3. Calculate concentration of ethanol in wine in terms of mass percent and molality.
An extraction procedure specifies that an aqueous solution containing dissolved organic material be extracted twice with 10-mL portions of diethyl ether.
Saccharin has the formula C7H5NO3S. Suppose you have a sample of a saccharin-containing sweetener with a mass of 2134 g.
Each of the following reactions is allowed to come to equilibrium and then the volume is changed as indicated. Predict the effect (shift right, shift left, or no effect) of the indicated volume change.
compressed gas cylinder contains 1.00 x 103 g of argon gas. The pressure inside the cylinder is 2050 psi at a temperature of 18oC. How much gas remains in the cylinder if the pressure is decreased to 650psi at a temperature of 26oC?
The "Zebra" cell was invented in 1985 in South Africa as part of the "ZEolite Battery Research Africa" project, and is used in all-electric municipal buses and other vehicles.
Question- What effects will trapped air bubbles have on the calculated density of a solid if the volume is measured using Archimedes' principle? Explain your answer. Will the measurement be higher or lower than the correct value
Solid Na2SO4 is added slowly to a solution that is 0.10 M in Pb(NO3)2 and 0.10 M in Ba(NO3)2. In what order will solid PbSO4 and BaSO4 form? Calculate the percentage of Ba2+ that precipitates just before PbSO4 begins to precipitate.
What is the number of moles of atoms of oxygen contained in 49 grams of sulfuric acid, H2SO4?
consider the reactioncacn2 3 h2o caco3 2 nh3 .how much caco3 is produced if 47.5 moles nh3 are produced?1. 0.950 g2.
why does the color change from blue to green or yellow near the endpoint of titration when the indicator is bromocresol green
How many moles of Na2SO3 were added to the calorimeter cup if 40.0mL 0.50 M NaOCl and 60.0mL 0.50 M Na2SO3 were combined?
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