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The meat from one hazelnut has a mass of 0.985 g.
a. What is the mass of a millionth of a mole (10^-6) of hazelnut meats?
b. How many moles are in a pound of hazelnut meats?
Calcium carbide, CaC2, reacts with water to form acetylene. CaC2(s) + 2 H2O(l) -> C2H2(g) + Ca(OH)2(s)
245.0 nm ultraviolet light strikes a metal plate and ejects electrons having kinetic energy E = 1.79 eV. Calculate the binding energy of an electron at the metal surface.
Calculate the energy of a photon of electromagnetic radiation at the following frequency 103.7 (typical frequency for FM radio broadcasting) in J.
A growth factor for cells was identified from extracts of rat brain. Preliminary characterization was done on this activity using several methods.
Using the following reaction: OH- + HC2H3O2 ---> H2O + C2H3O2- a 75.0 mL sample of potassium hydroxide, KOH, of unknown concentration is titrated with 42.5 mL of 0.575 M acetic acid.
r2 deaker and c3 phosphate are titrating 100 ml of monoprotic acid (HAc) with a .5M NaOH solution. the equivalence point was reached after the addition of 15 ml. what is the concentration of the acid in molarity
the freezing point of the solution is lowered by 5.10 °C. The freezing point and Kf constant for cyclohexane can be found here. Calculate the molar mass of quinine.
a carnot cycle uses 1.00 mol of a monatomic perfect gas as the working substance from an initial state of 10.0 atm and
The haloform reaction is executed in this experiment to synthesize benzoic acid from a methyl ketone, acetophenone. Provide an explanation for the following steps in the procedure. a) Why is acetone added at the end of the reaction
Calculate the concentration of a NaOH solution if 0.1379 g of succinic acid (H2C4H4O4, 118.09 g/mol) requires 12.4 mL of NaOH solution
Calculate the volume of O2, at STP, required for the complete combustion of 165 g octane (C8H18) to CO2 and H2O.
a student mixes four reagents together thinking that the solutions will neutralize each other. the solutions get mixed
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