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A potiential measurement in a paddy field acquiesce a reading of -278 mV verses the standard calomel reference electrode. Explain what is the pE value for this soil?
How many grams of glucose are needed to prepare 400 g of 2% m/m glucose solution. 2) how many moles of cacl2 are in 250 ml of a 3 m of cacl2 solution 3) How many liters of oxygen gas form when 294 g of KClO3 completely react in the following react..
Explain how many kilograms of chlorine are in 25 kg of each of the following chlorofluorocarbons (CFCs)
A mixture of camphor and water boils at approximately 99.1?C. At this temperature the vapour pressure of water is 736 mmHg. Calculate the percentage of camphor and water in the steam distillate by number of moles.
If 20.22mL of a 0.100M NaOH solution is required to reach the stoichiometric point for a strong monoprotic acid titration, what volume of 0.100M NaOH would be required to reach the stoichiometric point for a weak monoprotic acid solution
Sodium has a density of 0.968g/cm3 and crystallizes with the body-centered cubic unit cell. Calculate the radius of a sodium atom.
which mixture would not be expected to be homogeneous? pentanol and hexane kbr and water acetic acid and methanol
suppose a student is measuring the optical rotation of a 1 m sample of s--- limonene. the path length is 13cm. what
How many moles of NaBrO should be added to 1 l of 0.200 M hypobromous (HBrO) acid to obtain a buffer of pH 8.80 (assume no volume change occurs when solid NaBrO is added)? The pka of the acid is 8.70.
What must the Celsius temperature be if 2.0 moles of a gas in a 4.0 L steel container has a measured pressure of 100 atm
Explain why and calculate the difference between the delta S° values at 298 K for the complete dissociation of the two complex ions. (Hint: the value delta H is about the same for both systems.)
Barium sulfate, BaSO4, is used in medical imaging of the GI tract because it is opaque to X rays. A barium sulfate solution, sometimes called a cocktail, is ingested by the patient
What are the mole fractions of ethanol and water in a solution prepared by mixing 55 mL of ethanol with 45 mL of water at 25 degrees celsius
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