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While 8.7 g of toluene is mixed with 12 g of pure nitric acid, only 9.9 g of trinitrotoluene (TNT) is improved from the mixture when it is separated from other undesired byproducts. Explain what is the percent yield of the synthesis?C7H8 + 3 HNO3(l) C7H5N3O6(s) + 3 H2O(l)
Suppose you wished to control the PO43- concentration in a solution of phosphoric acid by controlling the pH of the solution. If you assume you know the H3PO4 concentration, what combined equation would be useful for that purpose? Include physical..
What mass of LP gas is necessary to heat 1.3 of water from room temperature (25.0 ) to boiling (100.0 )? Assume that during heating, 16% of the heat emitted by the LP gas combustion goes to heat the water.
(1.) Determine the pH of this buffer. (2.) Some solid sodium hydroxide is added to this buffer system and the new pH is measured as 4.74. How many grams of NaOH were added? (Assume the total volume remains unchanged)
If 1.20 grams of sodium metal are reacted with 4.00 mL of water, how many grams of NaOH will be produced. (The density of water = 1.00g/mL)
talc is a mineral that has low conductivity for heat and electricity and that is not attacked by acid. it is used as
Explain how the Pka hisdidine 57 is important to its role in mechanism of chymotrypsin action
Draw Fischer projection formulas for the products likely to be obtained from the bromination of (Z)-2-pentene with Br2/acetic acid. Identify the chiral centers with asterisks and label each center as R or S.
the manager of a small chemical plant receives an order for 2000 kg of a 30 solution by weight of phosphoric acid in
The amino acid glycine is often used for biochemical buffers. The amino group of glycing can exist in a protonated form or as a free base (pKa 9.6).
Calculate the energy, in joules, required to excite a hydrogen atom by causing an electric transition from the n=1 to the n=4 principal enegry level
write the net ionic equations for the precipitation reaction or reactions that occur. b) what are the spectator ions in the solution?
How much energy is required to vaporize 125g of benzene, C6H6 at its boiling point, 80.1 degrees celsius. The heat of vaporization of benzene is 30.8 kJ/mol.
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