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Problem- What is the heat absorbed if 2.118g of sodium chloride is dissolved in water? NaCl + H2O + 3.88kj ----> Na+ + Cl-
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Calculate the molality of a sucrose (C6H22O11) solution containing 14.3 g of sucrose in 676 g of water
A patient's blood test shows that she has elevated levels of LDL (low density lipoproteins) at 4.12 mmol/L. Convert this concentration to units of molarity (mol/L).
Explain why a 1m solution of the compound FeCl2 in water has a lower freezing temperature than a 1m solution of KCl in water and what is the empirical formula
a 112.2510g irregularly shaped object is placed in a graduated cylinder that contains 25.0 cm cubed of water. What is the solids density if the new water level was 37.5 cm cubed
What is the relationship between the standard cell potentials, E, for the following two galvanic cell reactions?
Compute the external pressure that must be applied to seawater 1.14 M total ion concentration at 10 C if the maximum concentration permissible in the product water is 176 mg/L. Presume that all the dissolved salts in the product water are sodium c..
1.explain what it means that the atomic mass of naturally occurring ag is a mixture of its two isotopes forms is
One of the highest concentrations of peroxyacyl nitrates has been found in the Los Angeles (LA) basin at 30 ppb, reaching its peak at mid-afternoon. Most of the pollution in the LA basin is created in an area of only 3000 km^2
An organic acid has a molecular weight of 192. A 100 mg sample of this acid was burned in an excess of oxygen in the apparatus. The only compounds that make up this acid are carbon, hydrogen and oxygen.
stationary phase thickness on the inner wall of 0.76 ?m passes unretained solute through in 65 s. A particular solute has a retention time of 403 s. What is the partition coefficient for this solute?
Suppose you have a solution that might contain any of the following cations: Ni^(2+), Hg^(+), Fe^(3+) and Ca^(2+). Addition of excess HCl causes a precipitate to form.
When 1.555g of this compound (molar mass=130.13g/mol) was burned in a bomb calorimeter, the temperature of the calorimeter (including its contents) rose by 7.429 degrees celsius. What is the heat capacity (calorimeter constant) of the calorimeter
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