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What is the energy of a photon of light that has a frequency of 3.09 x 1018 Hz? You might need to know that c = 3 x 108 m/s and h = 6.63 x 10-34 Js.
ethanec2h6burns in oxygena. what are the products of the reaction?c. what mass of o2in grams is required for complete
to determine the volume of a gas using ideal gas law.what volume will 5.6 moles of sulfur hexafluoride sf6gas occupy if
A portable photometer with a linear response top radiation registered 83.2 microamps with a blank solution in the light path. Replacement of the blank with an absorbing solution yielded a response of 451 microamps calculate
With two dice, each numbered 1-6, there are two possible ways to roll a 3: Thus, for the outcome of 3 (a particular macrostate) there are 2 microstates. How many possible ways are there to roll a 6
Could you please explain how to create a 260 L solution of ultra pure H2O with 1 molarity of sodium bicarbonate NaHCO3 Mwt 84.01 g/mol and 1 molarity of perchlorate from potassium perchlorate KClO4 138.55 g/mol
A buffer contains 0.16mol of propionic acid (C2H5COOH) and 0.17mol of sodium propionate(C2H5COONa) in 1.20 L. 1)What is the pH of this buffer?
The letter designations for the first four sublevels with the number of electrons that can be accommodated in each sublevel are what
Given chemical reaction is used to produce electricity in lead storage battery that used in automobiles generally.
Choose the selection which gives the correct number of and bonds present in one molecule or ion of ozone, O3. Make the central atom in your Lewis structure follow the octet rule if possible.
Write the net ionic equation for the precipitation of chromium(III) hydroxide from aqueous solution
Concentrated hydrochloric acid is 12 M and has a density of 1.18 g/mL. Calculate the mass in grams of a 0.025 L sample of concentrated hydrochloric acid.
A certain weak acid, HA , has a Ka value of 6.6×10?7. Calculate the percent ionization of HA in a 0.10 M solution. Calculate the percent ionization of HA in a 0.010 M solution.
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