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Cholesterol is a compound suspected of causing hardening of the arteries. A 5.02 g sample of cholesterol was analyzed, and the following data was obtained:
carbon 4.21ghydrogen 0.60goxygen 0.21gMM = 386 g/mol
What are the empitical and molecular formulas for the compound?
We were given three ways to make an ammonia/ammonium buffer solution. One way was to add solid NH4Cl to aqueous NH3. This way proved to be the best buffer when HCl or NaOH were added. Why is this. Why does the solid/aqueous buffer work the best.
which of the following statements about writing molecular complete and net ionic equations is false a net ionic
names of five alkenes having the molecular formula C6H12 that produce hexane on catalytic hydrogenation
When the surroundings absorbs heat, is the heat change of the system (qsystem) positive or negative
Determine the vapor pressure of a solution prepared by dissolving 250 g of Ethanol in 375 g of water?
Calculate the bond order for one carbon-carbon bond in benzene molecule, taking a and pi bonds
what spontaneous reaction will occur in aqueous solution among the ions Sn4+, Sn2+, Co3+, and Co2+ ? What will be the E°cell for this reaction?
a solution to replace potassium loss contains 40. meql of k and cl-. how many moles of k and cl- are in 1.5 l of the
Write the half-cell reaction for the oxidation. Write the half-cell reaction for the reduction. Write the balanced equation for the cell reaction. Keep substances in the order given in the original equation.
Calculate how the amount of AgCl(s )will change when the equilibrium is disturbed by Adding AgNO 3
What is the main structural feature of the azo dyes that causes them to be colored compounds?
Write the balanced chemical equation for the neutralization reaction that occurs when an aqueous solution of hydrochloric acid (HCl) is mixed with an aqueous solution of potassium hydroxide (KOH).
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