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Problem- Sodium metal reacts with diatomic chlorine gas to form sodium chloride. What is the percent yield for the reaction when 3.7 g sodium metal reacts with 4.3 g chlorine gas to produce 5.5 g of sodium chloride?A) 58%B) 63%C) 78%D) 70%E) 92%Answer all three questions and provide required steps
One radio station operates on an assigned frequency of 88.1 megahertz while another operates on an assigned frequency of 1460 kilohertz. What is the ratio of the larger to smaller value?
A container with 1 mole of gas is expanded from 5 litres to 10 litres by adding more gas. the temperature and pressure are kept constant. how many moles of gas are present after the expansion.
What is the molality of a 25.5% aqueous solution of phosphoric acid, H3PO4 (M = 97.99 g/mol)
Draw a structural formula of the R configuration of the compound shown below. Illustrate the stereochemistry about the chiral carbon using the "single up" (solid wedge) and "single down" (hashed-line wedge) bond tools. Show explicitly the bonds to..
Problem- a) Calculate the surface area in nm^2 of a water solution contained in a petri dish with a diameter of 9.0cm. The area of a circle is calculated as A=pie r^2
how many grams of glucose c6h12o6 must be dissolved in 563 gram of ethanol c2h5oh to prepare a 2.40 x 10-2 m
it was found that at 344 seconds the concentration of dinitrogen pentoxide was 0.696 mol/L and at 708.1 seconds the concentration of dinitrogen pentoxide was 0.237 mol/L. What is the rate of decomposition over the specified time period in this rea..
A 52.2 g block of an unknown metal at 85.5oC was dropped into an insulated vessel containing approximately 37 g of ice and 27 g of water at 0oC. After the system had reached equilibrium
The Lanthanum (III) oxalate decomposes to lanthanum III oxide, carbon monoxide also carbon dioxide when heated. If Kp = 1.00 x 10-6, as well as 0.100 mol of the solid are placed in a 10.0 L flask, define what amount of the solid remains un-reacted..
How many grams of zinc metal will react completely with 8.2 liters of 3.5 M HCl? Zn (s) + 2 HCl (aq) ZnCl2 (aq) + H2 (g)
A certainly gaseous solute dissolves in water, evolving 12.0 kJ of heat. Its solubility at 25 C and 4.00 atm is 0.0200 M. Would you expect the solubility to be greater than 0.0200 M at: a. 5 C and 6 atm? b. 50 C and 2 atm? c. 20 C and 4 atm? d. 25..
the partial pressure of oxygen in air at sea level is 0.21 atm. using the data in table 13.2, together with henry's law, calculate the molar concentration of oxygen, in the surface water of a mountain lake saturated with air at 20 degrees celcius ..
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