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Updated: June 24, 2025
NaOH used = 1.72 cc. 1 cc. H SO = 1.064 cc. NaOH Normal value NaOH = 0.1321 N. !Answer!: 87.72 cc. One gram of a mixture of 50% sodium carbonate and 50% potassium carbonate is dissolved in water, and 17.36 cc. of 1.075 N acid is added. Is the resulting solution acid or alkaline? How many cubic centimeters of 1.075 N acid or alkali will have to be added to make the solution exactly neutral?
One hundred cubic centimeters of the solution, when titrated with 0.1062 N hydrochloric acid, using methyl orange as an indicator, requires 38.60 cc. for complete neutralization. Barium chloride in excess is added to a second portion of 100 cc. of the solution, which is diluted to exactly 250 cc., allowed to stand and filtered.
The Paris Congress decided upon adopting certain units of resistance of electromotive force, of current, and of quantity, and they determined the particular length of a column of mercury that should represent the ohm a column of mercury 106 centimeters long and of one square millimeter in section.
They are cut from solid ingots, and those for guns up to 24 centimeters are rolled like railway tires; those for larger calibers are forged on a mandrel. Jackets of large size are also manufactured; these are made from solid ingots, which, after being forged, are bored out.
We pilots are having one sweet time we're being growled at on every trip. The management squawks if we're thirty seconds plus or minus at the terminals, and the passenger department squalls if we change acceleration five centimeters total en route claims it upsets the dainty customers and loses business for the road. They're tightening up on us all the time.
!Answers!: 0.1753 N; 0.02224 gram. One thousand cubic centimeters of 0.1079 N sodium thiosulphate solution is allowed to stand. One per cent by weight of the thiosulphate is decomposed by the carbonic acid present in the solution. To what volume must the solution be diluted to make it exactly 0.1 N as a reducing agent? !Answer!: 1090 cc.
They are already a meter and ten centimeters high. Within two days, they will be as high as a man. I have not allowed them to use anything but the best of wood. Do you want to look at the cellar?" The workmen saluted him respectfully. "Here is the system of drainage which I have taken the liberty to add," said Ñor Juan. "These underground canals lead to a cesspool about thirty feet off.
Test both filtrates for complete precipitation by adding a few cubic centimeters of magnesia mixture and allowing them to stand for some time.
While Nadia controlled her impatience as best she could, Stevens manipulated the bulbs and pipettes of the gas apparatus. "Pressure, fifty-two centimeters more than I dared hope for and analysis all x, I believe. Oxygen concentration a little high, but not much." "We won't have to wear the space-suits, then?" "Not unless I missed something in the analysis.
Pilleux's note: "Having at my disposal," says he, "a powerful vertical voltaic arc of 12 centimeters in length, kept up by alternately reversed currents, and one of the most powerful permanent magnets that Mr. De Meritens employs for magneto-electric machines, I have been enabled to make the following experiments: "1.
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