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33 Cards in this Set
- Front
- Back
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How many moles of N2 gas occupy 11.2 liters volume a STP condition?
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C. 0.5
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Which of the follwing is/are NOT a characteristic of gases?
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A. high density
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An unknown gas "X" effuses four times faster than a sample of SO2(g) through a porous container. Which of the following is the unknown gas?
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C. He
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What volume of air at 760 torr would have to be put into a car tire with a volume of 15 L if the pressure in the car is to be 2.38?
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B. 35.7
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If 400 mL of a gas sample at 25 (celsius) expands to 600 mL, the resulting temperature of the gas is
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C. 174
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At STP, 48g of O2 will occupy...
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B. 33.6
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In which of the following states of matter there is almost no difference in physical behaviour between different compounds?
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C. gas
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In a combustion reaction...
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B. a substance rapidly reacts with oxygen to produce heat and light.
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The standard enthalpy of formation ( H) for any element in its standard state is
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A. 0
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How many kJ of heat must be removed from 1000. g of water (specific heat 4.184J/g. C) to lower the temperature from 18.0 cto 12.0 C?
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D. 25
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From the following heats of reaction,
2C (graphite) + H2 (g)--> C2H2 6C + 3H2(g)--> Calculate the heat for the reaction 3C2H2 (g) ------> C6H6 |
B. -632 kJ/mole
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The heat of combustion of fructose, C6H12O6, is
-2812 kj/mole. Using the following information calculate the (enthalpy of formation) for fuctose. |
C. -1264
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Consider the combustion reaction of ethane gas, C2H6(g)
C2H6(g)+7/2O2(g)--> 2CO2(g) |
D. 2860
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Determine the value of ΔH˚ (in Kj) for the following reaction
2SO2 (g) + O2 ---> 2SO3(g) (ΔH˚f for SO2 = −297 kj and ΔH˚f for SO3 = −396 kj) |
A. -198 kJ
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Use the information shown for equations 1 and 2 to determine the value of H (in kJ) for equation 3.
3. 2SO2(g) + O2 ----> 2SO3(g) |
A. -196 kJ
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Use the information shown for equations 1 and 2 to determine the value of H(enthalpy) for equation 3
1. 2 NO -----> N2 + O2 H -180 N2+2O2-----> 2NO2 H= |
B. 68
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The value of heat exchange H for the above reaction is
-482 kJ exchanged when 10g of CO (g) complete reacts? |
C. -86.07 kJ
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If the value of heat exchange H of the following reaction reaction is -240 kJ and the value of heat energy (enthalpy) of C2H4 is 52 kJ. what is the value of heat energy for C2H2.
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A. 292 kJ
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Which one of the following acids is a weak electrolyte?
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D. HSO4
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What is the frequency of radiation that has a wavelength of 0.589 pm?
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D. 5.09 x 10(exp 20) s-1
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Statement, electrons fill the orbital singlet then double up is called………….
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B. Hund's rule
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For n = 4, what are the possible values of l
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C. 3, 2, 1, 0
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What is the maximum number of electrons that can occupy the
subshell 3d? |
D. 10
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Write the electron configuration for the atom Cu, using the appropriate noble-gas inner core for abbreviation.
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C. [Ar]4s13d10
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The maximum electron population in a shell, where n = 3 is
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B. 18
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Arrange the orbitals 4s,4p,4d,and 4f in the order of increasing energy
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A. 4s<4p<4d<4f
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What is the energy (in joules) of a photon with a wavelength of 5.00 x 104nm?
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B. 3.98 x10-21 J
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Which set of elements is in order of increasing atomic size?
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B. Na, K, Rb
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Which one of the following has the largest radius ?
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B. Cl-
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Which of the following species has the highest ionization energy?
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C. F
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The effective nuclear charge in a period
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A. Increases from left to right
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The atomic radius in the periodic table
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C. A & B
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Which one of the following is a f-block element
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C. Lu
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