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An unkown gas self-possessed of homonuclear diatomic molecules (molecules with two identical atoms) effuses at a rate that is merely 0.355 times that of oxygen gas at the same temperature. Based upon your calculations, identify the gas.
A 0.2527-g sample of a mixture of Mg(OH)2 and Al(OH)3 was treated with 50.00 mL of 0.225 mol L?1 HCl(aq). The resulting solution required 13.73 mL of 0.176 mol L?1 NaOH(aq) to neutralize the excess, unreacted HCl. What was the percentage by mass o..
Among the isomeric alkenes of molecular formula C5H12, provide the structural formula (condensed or bold-line) for the one, that on chlorination yields
a 0.456 gram sample of an unknown monoprotic acid lets call it hz was dissolved in some water you pick the amount. then
You are given some reactions as a. Cl2(aq) + 2NaI(aq)= I2(aq) + 2 NaCl(aq), b. Br2(l) + 2K(S)=2KBr(s), c. Pbs( s) + 4H2O2(aq)= PbSO4(s) + 4H2O(l) you just need to Indicate which element is reduced and which is oxidized in the given equations?
If 21.0 mL of silver nitrate solution reacts with excess potassium chloride solution to yield 0.882 g of precipitate, what is the molarity of silver ion in the original solution
what is the significance of a limiting reactant. discuss how it is found and what it tells us about the amount of
you added 25 lambda of a mgml amino acid solution to 975 lambda of buffer. what is the concentration of the amino acid
Describe how you could make 5 ml of 2 M potassium hydroxide solution if you have potassium hydroxide pellets available?
Thyroxine, an important hormone that controls the rate of metabolism in the body, can be isolated from the thyroid gland. When 0.455g of Thyroxine is dissolve in 10.0g of benzene, the freezing point of the solutions depressed by 0.300C. What is th..
why is a solution containing dissolved brass made basic with concentrated NH3 and again with acidified CH3COOH?
Consider a 15.0 mL sample of a ternary mixture composed of 25% (by volume) octane, 35% chloroform and 40% 2-propanol. Use the following information to convert volume composition to molar composition:
a .350 g sample of a biomolecule was dissolved in 15.0 g of chloroform, and the freezing point depression was determined to be .240 degree celcius. Calculate the molar mass of the biomolecule.
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