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Determine the molar mass of each of the following gases
Part A
0.86 g of a gas that occupies 480 mL at 0 °C and 1.00 atm (STP).
Express your answer to two significant figures and include the appropriate units.
Part B
1.50 g of a gas that occupies 1.05 L at 0 °C and 760 mmHg (STP).
Express your answer to three significant figures and include the appropriate units.
Part C
1.39 g of a gas that occupies 1.40 L at 685 mmHg and 23.0 °C.
Part D
3.1 g of a gas that occupies 2.5 L at 0.95 atm and 26 °C.
A 1 L solution of 1.5 M acetic acid and 1.5 M sodium acetate has a ph of 4.74. 10 ml of 0.1 M NaOH were added to the solution followed by the addition of 50 ml of 0.02 M HCl.
What is the system? What is the surrounding? In what direction does the heat flow? Is the process endothermic or exothermic?
What is the pH of a solution that contains 0.50 M H2CO3 and 0.50 M NaHCO3? (Ka1 = 4.3 X 10-7, Ka2= 5.6 X 10-11)
What effect did the addition of acetanilide have on the melting point of the unknown component. What about the addition of phenacetin
why would paraformaledhyde be used in an acetal formation reaction than formaldehyde(Bp=-6*C) which is commercially available as a 37% aqueous solution?
20.00 ml of 0.100F Pb(No3)2 (FW 331.2) are mixed with 15.00 ml of 0.125 F Nal (FW 149.9). Lead (II) and iodide form an insoluble salt pbl2 (FW 461.0) Calculate the concentration of each of the remaining ions after mixing. [Pb+2], [i-],[na+],[n03-]..
What mass of carbon dioxide is present in 1.00 m3 of dry air at a temperature of 25c and a pressure of 731 torr
In which of these molecules or ions does the presence of nonbonding electron pairs produce an effect on molecular shape, assuming they are all in the gaseous state. Check all that apply. SiH4, PF3, HBr, HCN, SO4
At what temperature will the chemical reaction be in equilibrium with the following values. DH = +62.9 kJ and DS = +132.9 J/K. At what temperature will DG = 0.00 kJ?
Barium chromate dissolved upon treatment with nitric acid forming an orange solution. Write a net ionic equation to represent the overall reaction that occurs.
Iodine tricholoride, ICI3, will react with a chloride ion to form ICI4-. Which species, if any, acts as a Lewis acid this reaction
Most of the alkali halides exhibit the "rock salt" structure shared by NaCl. Using the ionic radii Li 76pm, F 133pm, K 138pm, Br 196pm, show that LiF and KBr are consistent with the rule of thumb that the NaCl structure occurs for radius ratios be..
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