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are the following findings, express to the nearest atomic mass unit, in agreement with Dalton's atomic theory? expalin your answer.
1) an atom of calcium has a mass of 40u; an atom of vanadium, 50u.
2) an atom of calcium has a mass of 40u; an atom of potassium 40u.
After all the water is evaporated from 10.0 mL of a CsCl solution, 3.75 g of CsCl remains. Express the original concentration of CsCl solution in each of the following units.
Which of the following would be expected to be the most stable carcocation. Using good scientific terminology with the aid of structures/equations, clearly explain your answer.
Does purified aspirin appear to be purer than crude aspirin? What is your evidence?
how many grams of solid NaOCl must be added to 50 mL of .14 molar HOCl to obtain a buffer solution with a pH of 7.49.
Show all of your work for each of the following problems. An aluminum nail of mass 5.00g is immersed into a solution of copper(II)nitrate. How many grams of elemental copper can be produced from the reaction
Which one of the following compounds will be most soluble in water?
A 285- flask contains pure helium at a pressure of 750 . A second flask with a volume of 470 contains pure argon at a pressure of 716 .If the two flasks are connected through a stopcock and the stopcock is opened, what is the partial pressure of h..
Hard water contains Ca2+, Mg 2+, and Fe2+. Water softeners replace these ions with Na+. If 1.0 X 10^3L of hard water contains 0.010 M Ca2+ and 0.0050 M Mg2+
Calculate the standard free-energy change for the following reaction at 25 degrees C. 2Au^3+(aq) + 3 Cr(s) 2Au(s) + 3Cr^2+(aq)
How many milliliters of a 0.20 M glucose C6H12O6 solution are needed to provide a total of 25.0 g of glucose?
An equilibrium mixture for the reaction above contains [H2] = 1.00 M, [N2] = 1.50 M, and [NH3] = 2.00 M. What is the value of the equilibrium constant, Kc, for the reaction?
The pH at 25 °C of an aqueous solution of the sodium salt of p-cresol (NaC7H7O) is 11.60. Calculate the concentration of C7H7O- in this solution, in moles per liter. Ka for HC7H7O is equal to 6.7E-11.
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