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Draw all stereoisomers of 3-heptene.
To indicate the stereochemistry about double bonds, place the groups attached to the double bonds in appropriate positions with 120° bond angles. Don't use bold wedges, hashed wedges, or squiggly or criss-cross bonds.
Radioactive gold-198 is used in the diagnosis of liver problems. The half-life of this isotope is 2.7 days. If you begin with a 5.6 sample of the isotope, how much of this sample remains after 3.0 days?
Estimate the density of Rb if it crystallizes in a body-centered cubic unit cell and has an atomic radius of 247.5 pm.
Calculate the mass percent of a solution that is prepared by adding 61.3g of NaOH to 492g of H2O
If 17.0 mL of 0.800 M HCl solution are needed to neutralize 5.00 mL of a household ammonia solution, what is the molar concentration of the ammonia?
Without a reference sample of a pure compound, can melting point alone be used to unambiguously assignt the correct chemical structure
As a scuba diver descends under water, the pressure increases. At a total air pressure of 2.96 atm and a temperature of 25.0 C, what is the solubility of \rm N_2 in a diver's blood?
Calculate the wavelength of light emitted when each of the following transitions occur in the hydrogen atom. What type of electromagnetic radiation is emitted in each transition?
What is the hydronium ion concentration in a collation prepared by mixing 50.00mL of 0.10M HCN with 50.00mL of 0.030M NaCN. Assume that the volumes of the solutions are additive and that the Ka= 4.9*10^-10.
Presuming equal concentrations and complete dissociation rank these aqueous solutions by their freezing point from highest to lowest.
Concentrated ethanol solutions can be used to kill microorganisms. At low concentrations, however, such as in some wines, the microorganisms can survive and cause oxidation of the alcohol. What is the structure of the acid formed
HCl (aq) + NaOH (aq) ? NaCl (aq) + H2O (l) A known amount of NaOH is added to a solution containing an unknown quantity of HCl (aq).
If a stock concentration of 0.00099 M in 0.5 H2SO4 of potassium dichromate is given. After that dilute 5mL of potassium dichromate with 20mL of H2SO4. Explain what the concentration is
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