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The mass spectrum of a compound that contains two bromine atoms gives isotope peaks with relative intensities of 1:2:1 for the M, M+2 and M+4 peaks, respectively. Explain why.
Use the same reasoning to determine the relative intensities for the M, M+2, M+4, M+6 and M+8 peaks of a compound that contains four bromine atoms.
How many grams of ethylene glycol (automobile antifreeze, {rm C_2H_6O_2}) dissolved in 3.30 {rm kg} of water is needed to lower the freezing point of water in an automobile radiator to 24.5^circ {rm C}?
If solar radiation is 1010 , how many photons strike the leaf every second? Assume three significant figures and an average wavelength of 504 for solar radiation.
The maximum pressure that can be developed for a certain fluid power cylinder is 15.0 MPa. Compute the required diameter for the piston if the cylinder must exert a force of 30 kN.
What volume of 3.02 M HNO3 can be made by diluting 142 mL of concentrated nitric acid (16.0 M HNO3)?
what volume (in mL) of 1.12 M NaOH is required to react with exactly 12.3 grams of ferric chloride, according to the following equation? FeCl3(aq) + 3 NaOH(aq) → Fe(OH)3(s) + 3 NaCl(aq)
What is the vapor pressure at 75 degrees celcius of an aqueous solution prepared by the addition of 52.9 g of urea CO(NH2)2 to 178 g of water?
calculate the pressure of the dimer when the total pressure is .725 atm at equilibrium. 2ch3cooh(g) (ch3cooh)2(g) Monomer Dimer
Imagine a silica microsphere half of which is coated with a thin gold coating and having a trimethylammoniumpropanethiol molecule anchored to the gold.
What volume of 0.200M Hydrochloric acid must combined to 250mL of 0.300M C8H7NaO3 to produce a buffer of solution with a pH of 3.37?
What are the equations for Tin (IV) Chloride reacting with each of these? (ethanol, toluene, NaOH, dilute, HCL and conc HCL)
Water/methanol and water/acetone are viable solvent systems for recrystallization, but water/chloroform and water/pentane are not
Vinegar is an aqueous solution of acetic acid. By law, it must contain 4 g acetic acid per 100 ml solution. What approximate volume of 0.10 M of NaOH would be neededto titrate a 15.00 ml aliquot of commercially availabe vinegar?
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