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General Chemistry Quiz Exam 2024/2025 Questions With Completed & Verified Solution.
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General Chemistry Quiz Exam 2024/2025 Questions With Completed & Verified Solution.
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General Chemistry Quiz QuestionsWhich of the following situations involves "chemical property"?
A. All are correct
B. Oil floats on top of water because it has a lower density than water.
C. On a hot day, water evaporates at a faster rate than on a cold day.
D. Propane gas is flammable which means it is easily combusted. - ANS D. Propane gas is
flammable which means it is easily combusted.
Perform calculations and report the answer with proper significant figures. (3.654-2.07)/4.230 x
10^-2 = ?
A. 37.4
B. 37.449
C. 37.5
D. 37 - ANS A. 37.4
Who discovered the electron?
A. Milikan
B. Thompson
C. Dalton
D. Rutherford - ANS B. Thompson
What are the products of the alpha decay of U-238?
A. Th-234 and He-4
B. Ra-226 and He-4
C. Th-232 and He-4
D. Cm-247 and He-4 - ANS A. Th-234 and He-4
What is the hybridization of N in the ammonia (NH3) molecule?
A. sp
B. sp3
C. sp3d
D. sp2 - ANS B. sp3
What is the mass percent of H in a glucose molecule C6H12O6?
A. 33.3%
B. 50%
C. 6.7%
D. need more information - ANS C. 6.7%
Name Cr(OH)3?
A. Chromium trihydroxide
, B. Chromium (III) hydroxide
C. Chromium (VI) hydroxide
D. Chromium hydroxide - ANS B. Chromium (III) hydroxide
Element X has 3 isotopes at various percent abundances; 20^X (mass 19.99244, 90.92%),
21^X (mass 20.99395, 0.257%), and 22^X with unknown mass. The average atomic mass of X
is 20.1797 amu. Find the atomic mass of 22^X?
A. 21.98956
B. 22.0000
C. 19. 55061
D. 22.08568 - ANS D. 22.08568
How many sigma and pi bonds are there in a Cl2CO molecule?
A. 3 sigma, 1 pi
B. 2 sigma, 0 pi
C. 2 sigma, 1 pi
D. 4 sigma, 0 pi - ANS A. 3 sigma, 1 pi
For the following reaction, how many grams of product would be produced if we start with 2.80g
of Al and 4.25g of Cl2 (assume 100% yield)? 2Al (s) +3Cl2 (g) = 2AlCl3 (s)
A. 0.0399
B. 0.1037
C. 5.3267
D. 0.0598 - ANS C. 5.3267
What type of reaction is this? 2Al(s) + 3Cl2(g) => 2AlCl3(s)
A. Precipitation reaction
B. Redox reaction
C. Neutralization reaction
D. Acid-base reaction - ANS B. Redox reaction
Which molecule is a polar molecule?
A. SO2
B. XeF4
C.PCl5
D. CO2 - ANS A. SO2
Based on electron configuration, which element is diamagnetic?
A. Ca
B. P
C. C
D. Na - ANS A. Ca
Which is the smallest quantity?
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