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Specified that the density of CaO(s) is 3.34 g/cm3 as well as that the length of an edge of a unit cell is 481 pm, Find out how many formula units of CaO there are in a unit cell.
Calculate the final temperature of the metal and water mixture, assuming no heat loss to the surroundings.
A 0.10-mole quantity of CuSO4 is added to a liter of 1.0 M NH3 solution. What is the concentration of Cu2+ at equilibrium. [The formation constant for Cu(NH3)42+ is Kf = 5.0 x 1013.]
Compute the number of grams of sodium in 5.0 g of each of the subsequent sodium-containing food additives. NaCl (table salt)
Calculate the OH- concentration of a solution that has [H3O+] of 3.5 x 10 -10M. Is the solution acidic, base, or neutral? report answer in two decimal places.
what conditions must be present for a translational equilibrium and b rotational equilibrium of a rigid body?if these
How would the following experimental errors change the calculation of the number of mg of ascorbic acid in fresh orange juice, student neglected to filter the juice
The specific rotation of (S)-(+)-2-octanol is +89degrees. What is the enatiomeric excess (as a percentage) and of which isomer, for a sample of 2-octanol whose measured specific rotation is +59degrees
Calculate the percent ionization of 7.5×10?3 M butanoic acid in a solution containing 7.0×10?2 M sodium butanoate.
What is the pH of a solution prepared by mixing 50 ml of a .01055 M solution of lactic acid with 30 ml of a .0125 M NaOH. ka for lactic acid = 1.4E-4. What is the new pH if you add 15 ml more of the NaOH to the above solution
Calculate the uncertainty (in nm) in the position of an electron with the velocity of 2.00x103 m/s (the velocity is the same as in the preceding problem) and the uncertainty in the velocity is 1%. (2 significant figures are plenty).
An ice cube of mass 9.0 is added to a cup of coffee, whose temperature is 85 and which contains 110 of liquid. Assume the specific heat capacity of the coffee is the same as that of water.
Write a net ionic equation for the reaction that occurs when aqueous solutions of hydrobromic acid and potassium hydroxide are combined.
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