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A laser pulse with wavelength 540nm contains 4.40mJ of energy. How many photons are in the laser pulse?
what quantity of heat would be involved if 75.00g of mercury (Ar(Hg)=200.59,Ar(O)-16.00) was burned in oxygen.
Aldol condensation: why must aldehyde contain none of corresponding acid? In the aldol condensation with benzaldehyde + acetone (NaOH, ethanol) --> dibenzalacetone
Calculate the molar solubility of stronium fluoride (SrF2) when dissolved in a 0.0800 M solution of stronium nitrate
It takes 54.0 J to raise the temperature of an 11.7 g piece of unknown metal from 13.0C to 25.0C}. What is the specific heat for the metal?
If the sample contains a combined total of 1.90 mol and has a total mass of 60.3g, what are the percentages of CO2 and Ne in the sample by mole?
a 175.0g sample of a compound contains 56.15g C, 9.43g H, 74.81g O, 13.11g N, and 21.49g Na. What is the compound's empirical formula?
Give examples of a neutral salt, acidic salt and basic salt. Explain your choice.
Calculate the pH of a buffer solution obtained by dissolving 22.0 g of KH2PO4(s) and 36.0 g of Na2HPO4(s) in water and then diluting to 1.00 L.
Heat Capacity explained in this answer, Given the following heat capacity data for 2-propanol, determine the amount of heat required to heat 500 mL of 2-propanol from 0 C to it's boiling point.
Consider a gas at 1.00 atm in a 5.00 L container at 20 degrees celsius. What pressure does the gas exert when transferred to a volume of 2.77 L at 43 degrees celsius?
Fully explain why this series of reaction will produce the 3,5-dibromotoluene and direct bromination of toluene produces the 2,4-dibromotoluene.
a) What is the molarity of the acetic acid? b) If the density of the vinegar is 1.006 g/cm3, what is the mass percent of acetic acid in the vinegar.
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