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When benzene C6H6 of 780 g of (Molar mass = 78 g/mol) combines with 750 mL of concentrated nitric acid (16 M) and 750 mL of sulphuric acid (18 M), 1000 g of nitrobenzene (molar mass = 123 g/mol) and 250 g of an unknown compound with a high boiling point are obtained now you need to identify the limiting reagent and compute the percent yield of nitrobenzene
an unknown compound has the empirical formula ch2. a 0.050-mol sample of this compound weighs 4.20 g. what is the
A solution is made by dissolving 0.0350 mol of HF in enough water to make 1.00L of solution. At 24°C, the osmotic pressure of the solution is .975 atm.
when liquid water is put into an evacuated vessel at 25 celsius what is the sign of the change in enthalpy, entropy, free energy, and temperature for the system during this process?
The ionization constant or dissolution constant (KA) for acetic acid (HAc) is 1.8×10-5. (1) Write down the dissociation reaction. (2) Estimate pH of a solution containing 0.6 g of acetic acid in 1 L of water. Molecular weight of acetic acid is 60 ..
Why does the absolute refractory period occur and What is happening in the cell.
designing and preparing aqueous buffer solution with the ph indicated.ph3.50your buffer solution must have the capacity
Calculate DeltaG °rxn. c) In which direction is the reaction, as written, spontaneous at 25 °C and standard pressure?
Which of the following intermediates is believed to occur in the mechanism by which alkenes are hydrated in the presence of acid?
distinguish between an absorption spectrum and an emission spectrum. with which did bohr
How many moles of H3O+ must be added to one liter of a solution to adjust the pH from 7.48 to 5.90? Use E notation and 3 significant figures.
Starting Materials: Sebacoyl chloride, 1,6-Hexanediamine, Methyl chloroform, Sodium Carbonate monohydrate, Why is it necessary to have two immiscible solvents to make the nylon string?
Rubidium has two naturally occuring isotopes. The relative abundance of rubidium-85 is 72.17%; its atomic mass is 86.91 amu. Determine the average atomic mass of rubidium.
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