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Calculate the freezing point and normal boiling point of the following solution: 25.0 mL of ethanol, C2H5OH (d=0.780 g/mL), in 735 g of water (d=1.00 g/cm3)
Which is the best description of hydrogen bonding? The temporary attraction between hydrogen atoms on different molecules resulting from shifts in electron density The association between a hydrogen atom which is somewhat positive because it is bo..
an aqueous vinegar sample contains 4.4 acetic acid by mass and has a density of 1.006 gml. calculate the amount of
The value of ?Ho for the reaction below is -126 kJ. The amount of heat that is released by the reaction of 25.0 g of Na2O2 with water is ________kJ. 2Na2O2 (s) + 2 H2O (l) -> 4NaOH + O2 (g)
Show how it mixes together. Show the transfer of electrons with arrows. Show the carbocation and the compound created. Last of all draw both the compounds that are added together and the one that is created.
How many kilograms of magnesium can be obtained from 5.96 km^3 of seawater if the initial Mg^2+ concentration is .19% by mass. Remember the density of seawater is 1.04 g/ml
consider this reaction. caco3 s -gt cao9s co2 gwhat mass of caco3 will produce 8.0 l of co2 measured at standard
how many coloumbs are required to plate a layer of cr metal .25m thick on an autobumper with total area of .32m2 from a
In the monochlorination of hydrocarbons, a hydrogen atom is replaced by a chlorine atom. How many different monochloro derivatives of 2-methylpentane are possible
What amount of solid NaOH must be added to 1.0 L of a 0.13 M H2CO3 solution to produce a solution with [H+]= 3.4×10-11 M ? There is no significant volume change as the result of the addition of the solid.
how much heat energy is needed to convert 64.0 grams of ice at -18.0 degrees celcius to h2o at the temperature of 25.0
what is the formula for the compound that crystallizes with a cubic closest packed array of sulfur ions and that contains zinc ions in 1/8 of the tetrahedral holes and aluminum in 1/2 of the octahedral holes
suppose the capacity of your stomach to be 2.00l and its ph to e 1.50. how many grams of the antacid sodium bicarbonate
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