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A 2.50 g sugar cube (sucrose: C12H22O11) is dissolved in a 350 mL teapot containing 80° C water (density of water at 80° C= 0.975 g/mL).
What is the molality of the sugar solution?
Express the molality with the appropriate units.
To learn how to calculate the solubility from Ksp and vice versa. Consider the following equilibrium between a solid salt and its dissolved form (ions) in a saturated solution:
A certain compound is made up of two fluorine atoms, one chlorine atom, and one phosphorus atom. What is the chemical formula of this compound
a gas sample containing 1.50 mol at 25 exerts a pressure of 400 torr. some gas is added to the same container and the temperature increased to 50 C. If the pressure increases to 800. torr, how man moles of gas were added to the container? assume a..
200 drops of 0.025 M NaF solution and 100 drops of 0.025 M Ba(NO3)2 solution are mixed. a.) write the equation for the formation of solid BaF2.
a student mistakenly added concentrated 12 m hcl to sampleof unknown instead of adding 6m hcl as directed1 at first a
A buffer is prepared by mixing 500 mL of 1.50 M Ch3COOH with 250 mL of 1.00 M CH3COONa. What is the pH of the buffer system after the formation of 0.15 moles of OH- from a secondary reaction with the buffer. (Ka for acetic acid = 1.7 x 10^-5)
Using K=3.9 as the equilibrium constant, Keq, Compute the amount of Isoamyl acetate, also known as isopentyl acetate (C7H14O2 )that must be present at equilibrium.
The molar enthalpy of fusion of ice is 6.0 KJ/mol-K at 0 degrees Celsius. Define the heat capacities of water as well as ice in the vicinity of freezing point are 75.3 J/mol-K and 38.0 J/mol-K, respectively.
Hydrogen bonding does not make a significantly large contribution to the overall stability of the DNA molecule. Explain
The graph above shows the heating curve of wate
The frequency of the middle F note on a piano is 349.23 Hz. What is the wavelength of this note in centimeters. The speed of sound in air is 343.06 m/s.
A solid hydrate weighing 2.691g was heated to drive off the water. A solid anhydrous residue remained, which weighed 2.259g. If the anhydrous residue has a formula weight of 282, How much moles of water are present in one mole of anhydrous salts
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