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Show the calculation of the new temperature of a gas sample which has an original volume of 700 ml when collected at 730 mm and 35oC when the volume becomes 480 ml at 1.15 atm
A student decomposes KClO3 as well as collects 35.5 cm3 of O2 over water at 23°C. The laboratory barometer reads 746torr. If the vapor pressure of water at 23°C is 21.1torr. Determine the volume the dry oxygen would occupy at 0°C and 1.000 atm.
A compound with the molecular weight of 391.98 was determined to be 3.1 % Hydrogen, 31.5 % Phosphorous, and 65.4% Oxygen. Determine the empirical formula and molecular formula for the compound.
Identify the qual 1 cation that is confrimed present in a reference solution by the formation of a precipitate? by the color of a soluble complex ion?
A block of metal has a width of 3.2cm, a length of 17.1cm, and height of 3.3cm. Its mass is 1.5kg. Calculate the density of the metal.
a tank with a volume of 1.00m3 is filled with air at 0 degrees to 20 times its atmospheric pressure. how much volume
What are the products of the reaction of potassium hydride and water. KH(s) + H2O(l) ? A) K(s) + H2(g) + OH-(aq) B) K(s) + H2(g) + O2(g) C) KOH(s) + O2(g) D) K+(aq) + H2(g) + O2(g) E) K+(aq) + H2(g) + OH-(aq)
a 1.800 g sample of phenol c6h5oh was burned in a bomb calorimeter. the calorimeter contains 1250 g of water and the
suppose that you titrate a 3 g sample of orange juice and it turns out to contain only 95.5mg of vitamin c. further it
How can you visually demonstrate that a substance is insoluble or just slightly soluble. Some solid remains in both cases.
Magnesium metal reacts with HCl solution, liberating H2 gas and generating Mg2+ cations in solution. A 2.530-g sample of Mg metal is added to 50.0 mL of a 4.00 M HCl solution, and the reaction goes to completion. How many grams of H2 are formed
How much heat is required to raise the temperature of a mole of oxygen from 298 to 3000 K at constant pressure. The book gives the following values for Cp (specific heat at constant pressure): 29.376 J/(K*mol) at 298 K and 39.884 J/(K*mol) at 3000 ..
When 6.50 g of the solid is dissolved in 50.0 g of water, the freezing point of the solution is lowered by 5.23 degrees celsius. What is the composition by mass of the solid?
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