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Why is potassium dichromate paramagnetic? Can you explain me how bcz it doesnot have unpaired electron.
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How many grams of NaCl is needed to prepare 100.0ml of 1.50 molar solution of NaCl in a volumetric flask.
State the composition and the properties of the ketohexose derived from fruit jam. Describe the manner in which ketohexose acts as a reducing sugar in the test.
a c-h bond absorbs at 2950 cm-1. replacing the 12c with 14c has a smaller effect on the position than replacing the 1H with 2H (even though the carbon mass is increased by 2 units and the hydrogen mass is only increased by 1 unit). Explain.
What is a trans fat? Why would partially hydrogenated oils contain higher amounts of trans fats than natural fats and oils? Why are saturated and trans fats considered a risk factor for cardiovascular disease?
You have 100 mL of a .10 M Acetate buffer pH 4.75 composed of .050 M Acetic Acid and .050 M Na Acetate. 100 ml of pure water is added and the pH is still 4.75. Use the henderson hasselbalch equation to explain what happened.
The vapor pressure of pure CH2Cl2 (with molecular weight 85 g/mol) is 133 torr at 0?C and the vapor pressure of pure CH2Br2 (with molecular weight 174 g/mol) is 11 torr at the same temperature.
Chemist found the density of Freon-11 (CFCl3) to be 5.58 g/L under her experimental conditions. Her measurements showed that the density of an unknown gas was 4.38 g/L under the same conditions. Explain what is the molar mass of the unknown
At 33°C, what is the osmotic pressure of a 0.6% by weight NaCl, in water. (The density is 1.0 g/mL at 33°C)
A voltaic cell employs the following redox reaction: 2Fe3+(aq)+3Mg(s)--> 2Fe(s)+3Mg2+(aq+ Calculate the cell potential at 25 under each of the following conditions.
If the titrant has a molarity of 0.2750 M and there are 45.00 mL of analyte present, what is the molarity of the analyte?
Is the hydration of alkenes under acidic conditions that generally leads to rearrangements exergonc
Write an equation for the ionization of each of the following amines in water. Consider if you need a double or single arrow ethylamine
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