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Researchers often purchase liquid nitrogen in insulated 200 L tanks; liquid nitrogen has a density of 0.808 g/mL and boils at 77 K. Suppose that all 200 L of liquid nitrogen in a tank accidentally vaporized in a lab measuring 8.50 m x 8.00 m x 8.50 m.
What maximum fraction of the air in the room could be displaced by the gaseous nitrogen?
Explain the effect on pH increase, decrease or no change that results from each of the subsequent additions A) Potassium hypochlorite KClO to an aqueous solution of hypochlorous acid HClO
What volume of 0.812 M HCl is required to titrate 1.45 g of NaOH to the equivalence point
A 25ml sample of solution containing thallium(I) (TI) was treated with K2CrO4 to perticipate thallium chromate. The solid TI2CrO4 was filtered, washed to remove excess chromate, and then dissolved in dilute H2SO4
Determine the longest wavelenght of light required to remove an electron from a sample of potassium metal, if the binding energy for an electron in K is 1.76*10^3 kJ/mol.
How to do I calculate the pH of original buffer given mass of NaC2H3O2*H2O (FW =136 g/mol) = 3.507 gafter measuring out 8.8 mL of 3.0 M acetic acid to add to the beaker containing the sodium acetate. Then put in 55.6 mL of distilled water with the..
Asswne the field oxide between an n+ poly-Si wire and the p-substrate is 0.3 j.lm thick and that Na = 5El7 cm-3.
Why do you not need to accurately measure the volume of deionized water in which you dissolve the iron salt
If given Cu(OH)2=CuO + ? and separately CuO + HCl= CuCl2 + ? What are the finished equations?
For which of the following equilibria does Kc correspond to an acid-ionization constant, Ka? NH3(aq) + H3O+(aq) NH4+(aq) + H2O(l) NH4+(aq) + H2O(l) NH3(aq) + H3O+(aq) NH4+(aq) + OH-(aq) NH3(aq) + H2O(l) HF(aq) + OH-(aq) H2O(l) + F-(aq) F-(aq) + H2..
A Solution was analyzed using AA spectroscopy for Au. The signal registered was 150. The sample solution was placed in a 10ml container and spiked with 2ml of a 0.125mM standard Au solution. The spiked solution returned a AA signal of 185. What wa..
A sample of an oxide of antimony (Sb) contained 19.75 g of antimony combined with 6.5 g of oxygen. What is the simplest formula for the oxide?
the molecular weight of citric acid is 0.030m. how many grams of citric acid molecular weight 192 are present in a
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