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One parsec equals 3.26 light years, where a light year is the distance light travels in one year. If the speed of light is 186000 mi/s, how many parsecs does it take for light to reach Mars from Earth, which is 60 million kilometers away? (Km=0.621mi).
how many phosphoester bonds and phosphoanhydride bonds are in adenosine
Question 3. Calculate the pH of 0.20 M aniline(aq). The Kb for aniline is = 4.3 x 10-10 Question 4. If the [OH-] = 10-3 M, the pH of the solution is Question 5. If the pH of an aqueous solution is 4, what is the hydroxide ion concentration?
Diamond is the hardest substance and the best conductor of heat yet characterized. For these reasons, it is used widely in industrial applications that require a strong abrasive.
Ionization energy is defined as the amount of energy input that is needed from an outside source to remove an electron from an atom. Ionization, in the quantum view, corresponds to raising an electron to the n = 1 electronic state.
An aqueous solution is 30.0 % by mass ammonia, NH3, and has a density of 0.892 g/mL.The mole fraction of ammonia in the solution is?
Consider a pipe with a length of 43.5 cm. If the temperature of the air is 19.5 oC and the pipe is closed in one end and open in the other, what is the frequency of the third harmonic for the pipe? Post your answer in hertz (Hz) and with 3 signifi..
Write the possible polymeric structure formed between sebacoyl chloride and butane-1,4-diamine, what is the appropriate name for this polymer?
Determine the concentration of CO32- ions in solution after 35.0 mL of 0.155 M Mg(NO3)2 solution is reacted with 58.0 mL of 0.0988 M Li2CO3 according to the reaction given.
Explain which distilation method (fractional or simple) would be most appropriate to seperate hexanes and dichloromethane.
A bottle of concentrated aqueous sulfuric acid, labeled 98.0 wt% H2SO4, has a concentration of 18.0 M. How many milliliters of reagent should be diluted to 2.600 L to give 5.00 M H2SO4
How would you prepare a liter of "carbonate buffer" at a pH of 10.10. You are provided with carbonic acid (H2CO3), sodium hydrogen carbonate (NaHCO3), and sodium carbonate (Na2CO3). Ka value of H2CO3= 4.2x10^-7
Calculate the freezing point of 0.15m calcium chloride aqueous solution. Assume that the molal freezing point depression constant
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