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a natural hormone of moths has a molecular formula of C21H40(its a zero not an o) and yields the following three compounds on ozonolysis; (1) dodecanol, (2) hexanol; and (3) HOC-CH2-CHO what is the structure of the hormone?
A 24.0 g sample of nitrogen gas reacts with an excess of hydrogen gas to give an actual yield of 3.85 g NH3. What is the percent yield for this reaction? Reaction: N2(g) + 3 H2(g) ? 2 NH3(g)
An unknown, rectangular substance measures 3.6 cm high, 4.21 cm long, and 1.17 cm wide. If the mass is 21.3g, what is this substance's density?
below, 8.34 atm each of H2 and Br2 were placed into a 1.00 L flask and allowed to react: H2(g) + Br2(g) 2 HBr(g) Given that Kc = 86.7, calculate the equilibrium pressure of Br2.
A 1.0 ounce piece of chocolate contains 15 of caffeine, and a 6.0 ounce cup of regular coffee contains 105 of caffeine.How much chocolate would you have to consume to get as much caffeine as you would from 5.0 cups of coffee?
which molecule will undergo only London dipersion forces when interacting with other molecules of the same kind?
0.90 g of hydrogen chloride (HCl) is dissolved in water to make 2.5 L of solution. What is the pH of the resulting hydrochloric acid solution?
what is the balanced net ionic equation? AND what is the molarity of the tartaric acid solution?
It was originally part of my ebook EVERYTHING YOU NEED TO KNOW ABOUT CHEMICAL NOMENCLATURE. If you want more information or a more complete description to include inorganic compounds please see the ebook section of this website.
At an altitude of 45.00 km, the average atmospheric temperature is essentially 0 degrees C. What is the average number of air molecules per cubic centimeter of air at this altitude?
Use average bond energies to calculate the energy released when 1 mole of acetylene gas (ethyne, C2H2) reacts completely with O2(g) to form gaseous products. Use the information in the Table of Bond Enthalpies which is in the Chemistry Tables link..
how is the rate of consumption of O2 related to the rate of consumption of NH3 in the reaction 4NH3 + 5O2 -->4NO +6H2O?
Draw a triacylglycerol (triglyceride) made from glycerol, myristic acid [CH3(CH2)12COOH], palmitic acid [CH3(CH2)14COOH], and oleic acid [CH3(CH2)7CH=CH(CH2)7COOH(cis)].
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