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Problem- Which pair of compounds are constitutional isomers? a) Butane and Cyclobutane. b) Cyclopentane and Methylcyclopentane. c) 3-Methylpentane and 3-Methylhexane. d) 2-Methylpentane and 2, 3-Dimethylbutane
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A solution of methanol, CH3OH, cotains 55.0 grams of methanol in 100. mL of water solution. What is the molarity of methanol in the solution?
a balloon is partly inflated with 480 liters of helium at sea level where the atmospheric pressure is 996 mbar.the
the wavelength of light absorbed by rhodospin rhodopsin is the pigment in the retina rod cells responsible for vision
The adjusted retention times were 10.4 min for hexane, 12.3 min for heptane, and 11.6 min for the unknown. Calculate the retention index for the unknown.
How many moles of each product are formed in the reaction at 25 C and 1 atm of pressure. What is the total volume of product gases at 25 C and 1 atm.
Write the thermochemical equation for the combustion of acetylene, C2H2 (g), in oxygen, for which the standard enthalpy of reaction is -1300 kJ per mole of acetylene.
Models do not necessarily have to be physical objects. They can be two-dimensional drawings or even mental constructs. Cite one or more examples of such models encountered outside of chemistry. Can you think of models that are used in your own..
Draw a glycerophospholipid made up of the components glycerol, phosphoric acid, choline, linoleic acid, and linolenic acid.
Decaborane, B10H14, was utilized as a fuel for rockets in the 1950's. It ignites instinctively with O2 according to the subsequent reaction: B10H14 + 11O2 ? 5B2O3 + 7H2O
Calculate the molarity of Pb2+ when 20.00 mL of 0.400 M Pb(NO3)2 is diluted with water to a volume of 200.00 mL.
Earth's oceans have an average depth of 38000m, a total area of 3.63*10^8km^2, and an average concentration of dissolved gold of 5.8*10^-9g/L. a) how many grams of gold are in the oceans?
The solubility of magnesium fluoride, MgF2, in water is 0.016 g/L. What is the solubility (in grams per liter) of magnesium fluoride in 0.013 M sodium fluoride, NaF
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