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determine the empirical formula of a substance (Vanillin) that contains 63.15% carbon, 5.30% Hydrogen, and 31.55% oxygen.
What is the amount of energy packaged in a photon with a wavelength of 310 nm. Calculate the frequency of EM radiation with a wavelength of 1.2 x 10-7 m
explain why the vitamin tablet is crushed before titrating with the iodate titrant.
The heat of fusion of water is 335 J/g. How much heat would be required to melt 47.5 g of ice?
How many liters of oxygen are needed to exactly react with 19.8 g of methane at STP?
supposed 175 mmol of NH3 and 131 mmol of O2 are added to an empty flask how mych NH3 will be in the flask at equilibrium.
How many mL of 0.25 m NaOH solution are required and What is a standard soluyion in an acid-base titration
For the given reaction, 2 HCl (aq) + Ba(OH)2 (aq) BaCl2 (aq) + 2 H2O (l) 73.0 grams of HCl are allowed to react with 342 grams of BaCl2.
Although Pd (II) complexes with monodentate O-donor ligands are not as plentiful as those with P- , S- and As-donor Ligands
A Cu/Cu2+ concentration cell has a voltage of 0.24 V at 25M . The concentration of Cu^2+ in one of the half-cells is 1.5×10-3 . What is the concentration of Cu2+ in the other half-cell?
How many moles of carbon, hydrogen, & oxygen are present in a 100g sample of ascorbic acid? Ascorbic acid (vitamin C) contains 40.92% carbon, 4.58% hydrogen, and 54.50% oxygen by mass. Assume a 100 g sample of ascorbic acid.
How many moles of oxygen are combined with 4.20 moles of chlorine atoms in C2O7?
A chemist is commissioned to produce 50,000 liters of 0.550 M aqueous phosphoric acid. The chemist can purchase solid, 98.64% pure, phosphoric acid to dissolve in water. How many grams of this reagent are required?
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