17 FINAL-E g carbon dioxide is an example of A) a a com 10 What is the A) chemic

Question

17 FINAL-E g carbon dioxide is an example of A) a a com 10 What is the A) chemical formula for chromium I) sulfate? Cr2(SO4)3 B) an D) homogeneous mixture. a 11) Which of the foll A) Raising cause the volume of an gas to in value? ideal triple of 3. the temperature from 25 75 ring absolute perature by a factor of while 3 term D) Lowering the 3 while presure by a factor ERaising the absolute temperature the the absolute temperature by a factor temperature pressure. by a factor of 3 while 12) mass pressure by a factor of What in does 7.98 moles of Kr have? A) 422 g 13) Give the net ionic DO 480 Fe(NO32 equation for the reaction (if any) that occurs when aqueous solutions of K2s and 13) are mixed. 2 K E) No Determine the volume of H2s (at 375 K and 1.20 atm) needed to produce 550 gofs. Assume that there is excess SO2 present. 14) 14) A) 34.1 L 22.7 L D 293 L 15 Which of the following elements is a good conductor of heat and electricity? A) fluorine B) argon C) aluminum 15) D) carbon 16) container at 800 mm Hg? A) -114c 159°C A fixed amount of gas at 25.0°C occupiesa volume of 9.23 Lwhen the pressure is 629 torr. Use Charles's law to calculate the volume (L) the gas will occupy when the temperature is increased to 166°C while maintaining the pressure at 629 torr. A) 11.3 L redict the charge that the ion formed from iodine would have. E) 2+ A) 1+ B 4+ D) 2

Explanation / Answer

Question 9.

carbon dioxide, CO2, is an example of a compound, since it has 2 elements, therefore can't be an element, nor a mix

choose C

Q10.

For Chromium (III) = Cr+3

Sulfate = SO4-2

then 3x2 --> 2x3

Cr2(SO4)3

choose A

Q11

volume to triple --> either decrease in pressure, or increase in Temperature

a) false, since T must be in abs

b) false, this will have 3x3 effect

c) This is TRUE, decreas in 3x of P will increas 3x V

d) lowering T will lower V, ignore this option

e) false, 3x1/3 factor cancel each other

Q12.

MW of Kr = 83.798 g/mol

so

7.98 mol = 83.798*7.98 = 668.70804 g of Kr, choose E

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