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Compute the grams of sodium chloroacetate needed to prepare 50mL of a 0.256M NaClCH2COO solution
How many grams of Ca metal are produced by the electrolysis of molten CaBr2 using a current of 30.0 amp for 10.0 hours
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. Recall that the volume of a sphere is (4/3) pi..
it is valuable to know that 1 milliliter ml equals 1 cubic centimeter cm3 or cc. how many cubic centimeters are in an
You add 1 mL of 1 M HCl to the buffer. Calculate the molarity of H30+ added as HCl, and the final molarities of acetic acid and acetate ion at equilibrium. What is the new value of pH?
the tss of a wastewater was determined using 30 ml of sample. the filter used originally weighed 0.4327 grams. after
question 1 the variation of emf for the cell below with temperature is shown in the graph below.nbspzns zncl2 aqueous
calculate the mass of oxygen dissolved in a 5.00 l bucket of water exposed to a pressure of 1.13 atm of air. assume the
How many quartz of ethylene glycol, C2H6O2 (density = 1.116 g/mL). Will have to be added to 5 gal of water (density = 1 g/mL) to protect an automobile radiator down to a temperature of-10 oF?
Assume ideal behavior of diatomic gas and ignore the changes in the number of moles of gas during combustion.
These compartments are connected by a partition that transmits heat. What is the final temperature in the box at thermal equilibrium
What mass of solid sodium fluoride (molar mass = 41.99 g/mol) should be added to 1.0 L of 0.23M hydrofluoric acid to make a buffer with a pH of 2.94? (Ka of HF = 1.36 x 10-3)
The structure of the compound K2O is best described as a cubic closest packed array of oxide ions with the potassium ions in tetrahedral holes. What percent of the tetrahedral holes are occupied in this solid
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