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Why does cold water boil faster than warm water? Does it have to do with pressure?
The molar concentration of the indicator HIn (Ka= 4.8x10 -6 )and its conjugate base In- at 450 were determined as ?In-= 2.06x104 , respectively. Calculate the absorbanc (b=1.00cm) for the buffered(pH=6.00) having total indicator concentration of 2..
How much heat is released when 50.0 grams of water at 100 degree celcius hits the skin and cools to a body temperature of 37 degree celcius.
How many grams of Na3PO4 will be needed to produce 550 ml of a solution that has a concentration of Na+ ions of 1.00M ?
Compute the mass of solute required to make 200.0mL of a 2.50% by mass solution of magnesium sulfate. Presume the density of the solution is equivalent to water, 1.00g/1.00mL.
Calculate the internal energy that must be added to a mole of helium gas to raise its temperature from 300k to 1000k
A solution composed of 20.00 g C2H5OH in 60.00 g CCl4 has a density of 1.280 g/mL. Calculate the molarity of C2H5OH in the solution.
why the boiling point of deuterium is higher than protium?what is the relationship between the molar mass affected
Calculate the mass of potassium hydrogen phthalate, KHC8H4O4 (MM is 204.2 g/mol) needed to react completely with 20 mL of 0.1 M NaOH solution.
Gold is a face-centered cubic structure that has a unit cell edge length of 4.08Angstroms . There are four gold atoms per unit cell. How many gold atoms are there in a sphere that is 20nm in diameter
Draw a flame ionization detector FID using the following parts: column, flame, hydrogen, air, electrode, current meter
calculate the number of grams of acetic acid per 10ml of the vinegar. Since vinegar has a density of about 1.00 gram/ml, 100 ml eighs about 100 g.
How many grams of CaCl2 would be dissolved in 1.2 L of a 0.10 M solution of CaCl2?
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