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Calculate the molarity of Ba(OH)2 solution if a55.00 mL portion of this solution is neutralized by 55.00mL of1.500M HCl
normal glucose levels in the blood are from 70 to 10 mg glucose per 100 mL of blood. If the level falls too low, there can be brain damage.
A 0.0050 molar solution of sugar is separated from pure water by a membrane at 20 C. What is the osmotic pressure?
How many grams of zinc are there in 22.7 g of ZnCl2?
Acetylene gas (C2H2) is produced by adding water to Calcium carbide CaC2. How many grams of acetylene are produced by adding water to 5g CaC2?
determine the molarity of a solution prepared by dissolving 45.0g of CH3OH in sufficient water to make 725mL.
five grams of the specified pure solvent is placed is placed in a variable volume piston. What are the molar enthalpy and total enthalpy of the pure system when 50% and 75% have been evaporated at
when sodium azide , NaN3 , is activated in an automobile air bag , nitrogen gas and solid sodium are produced . if 0.0500 moles of NaN3 react , what mass , in grams , of nitrogen would result ?
a gas expand and does P-V work on the surroundings equal to 294 J, at the same time , it absorbs 196J of heat from the surroundings. what is the change in energy of the system
Dicarbonyl compounds, such as benzil, can be characterized by reaction with o-phenylenediamine to form a substituted quinoxaline.
Draw the accepted mechanism for each reaction and illustrate how each stereoisomer is formed in the reaction.
A bottle containing 315 g of cleaning solution is used for carpets. If the cleaning solution has a specific gravity of 0.850, what volume of solution was used?
Suppose 1.07 g of FeCl3 is placed in a 75.0 mL volumetric flask, water is added, the mixture is shaken to dissolve the solid, and then water is added to the calibration mark of the flask. Calculate the molarity of each ion present in the solution.
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