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Categorize each orbital diagram for ground-state electron configurations by the rule or principle it violates
You have 250.0 mL of a 0.56M solution of sodium acetate. How many mL of 0.50M acetic acid should be added to make a buffer of pH 4.40.
What is the molality of a solution of ethylene glycol that contains 63.0 g of (CH2OH)2 dissolved in 557.5 g of water? Use molar masses with at least as many significant figures as the data given.
A gas sample occupying a volume of 64.7mL at a pressure of 0.971 atm is allowed to expand at constant temperature until its pressure reaches 0.389atm. what is the final volume
A cylinder contains 250 g of Helium at 200 K. The external pressure is constant at 1 atm. The temperature of the surroundings is lowered by 100 K. Calculate the heat lost or gained by the system in response to this change in the external temperatu..
water has a mass per mole of 18.0 gmol and each water molecule h2o has 10 electrons. a how many electrons are there in
During a recrystallization a student takes 1g of a white (colorless) solid and adds 5 mL of acetone. He heats the mixture in a boiling water bath and adds another
Draw the structure of the major small-base dehydrohalogenation product of 2-bromo-3-methylbutane
A solution contains 6 % of NaCL. How many milliosmoles are represented in 478 mL of the solution? (NaCl m.w. 58.5).
Acetic anhydride is formed from acetic acid in a condensation reaction that involves the removal of a molecule of water from between two acetic acid molecules. Write the chemical equation for this process.
Acetic acid is added to water until the ph reaches. What is the total concentration of the added acetic acid.
what mass of this substance must evaporate in order to freeze 119 of water initially at 24? the heat of fusion of water
Using a sample that was dissolved in CH 2 Cl 2 , mixed alumina, evaporated the CH 2 C l2 , loaded and began to run his column, starting with C 6 H 14
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