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A solution of 12.50 mM of compound X and 11.75 mM of compound Y gave peak areas of 7.55 and 7.02 cm2 on a chromatogram. A solution containing an unknown amount of X and 10.25 mM of Y was run and gave peak areas of 8.20 and 6.50 cm2 respectively. What is the concentration of X in the unknown solution? What kind of standard is Y?
When iron(III) oxide reacts with hydrochloric acid, iron(III) chloride and water are formed. How many grams of iron(III) chloride are formed from 10.0 g of iron(III) oxide
How would you create high temperatures in the lab when working with a micropatterned paper device that assesses liver function?
What is the equilibrium concentration of hydronium ion in a solution that is 0.041 M in HF and 0.19 M in F1- ion.
one cup is equivalent to 237 cm^3. In 1 cup of oil has a mass of 216 g. What is the density of olive oil in g/cm^3
A rock contain 3.2 grams of a radioactive isotope, uranium-235, . Determine what was the original amount of uranium-235 in the rock If the rock has undergone 2.75 half lives, and how old is the rock?
What mass (in g) of silver chloride is formed when 50mL of a 2M solution of a sodium chloride reacts with 50 mL of a 0.6 M silver nitrate solution?
KEtones also undergo the aldo condensation, although a succesful reaction often requires "enhanced" conditions, since the addition involves an unfavorable equilibrium constant.
Consider the following reaction: 2 HI(g) -> H2(g) + I2(g) If 3.55 moles of HI(g), 0.550 moles of H2, and 0.630 moles of I2 are at equilibrium in a 1.00 L container at 915 K
During a strenous workout, an athlete generates 1890.0 kj of heat energy. What mass of water would have to evaporate from the athlete's skin to dissipate this much heat?
A radioactive sample of 100g has been reduced to 1.56g in 85 years. How long is the half-life?
A dry-cleaning solvent (molecular weight = 146.99 g/mol) that contains C, H, and Cl is suspected to be a cancer-causing agent. When a 0.299 g sample was studied by combustion analysis, 0.537 g of CO2 and 0.0727 g of H2O formed.
Determine which structure do you expect to contribute the most to the actual structure of BrO 4 - keep in mind to take in expanded octets, as suitable?
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