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Suppose you take 2.45 g of glucose and dissolve it using 0.200 kg of water. What would be the mass percent of glucose in this solution?
A.123%
B.1.23%
C.1.21%
D.2.42%
If a solution of formic acid/formate buffer contains 0.166 M HCO2H and 2.26 M HCO2Rb. Compute the pH of the solution. Round your answer to 3 significant digits.
How does a base, such as NaOH, help to catalyze the benzoin condensation when thiamine is present
A 1.00 L vessel contains an unknown amount of PCl5 and 0.020 mol each of PCl3 and Cl2 at equilibrium at 250?C. How many moles of PCl5 are in the vessel if Kc for this reaction is 0.0415 at 250?C.
Perform a t-test at the 95% confidence level to determine if the new method contains bias. What is the calculated value of t for the new method
A 25.00mL portion of this solution required 17.56mL of hydrochloric acid(0.1396 mol/L) for complete neutralization. Calculate the percent of sodium carbonate in the mixture.
During a structure fire, the pump runs for 30 minutes. How many pounds of water are used to extinguish the fire? The density of water is 1.0 grams per milliliter.
Determine the enthalpy for the given reaction as CS2
The formula for the volume of a sphere is V=4(3.167)r^3/3. Assuming a spherical shape, calculate the mean diameter of a blood cell in centimeters.
The following pairs of soluble solutions can be mixed. In some cases, this leads to the formation of an insoluble precipitate. Decide, in each case, whether or not an insoluble precipitate is formed.
A .8046 gram sample of impure BaCl2 * 2H2O weighed .7082 grams after it was dried at 200 degrees C for two hours to drive off H2O. Calculate the % water in the sample.
Explain how many milligrams of carbon monoxide does the average person inhale in a 6 hour period for this level of carbon monoxide pollution. Presume that the carbon monoxide has a density of 1.2g/L. 15.0 ppm CO means15.0 L CO per 106 L Air.
Tooth enamel in mainly hydroxyapatite, Ca10(PO4)6(OH)2. If 1.117g of tooth enamel reacts with acid to give 1.111g of calcium chloride, what is the percentage of hydroxyapatite in the tooth enamel sample
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