Which of the above molecules contains a carbonyl group?
A) a
B) all but a
C) all but b
D) c
E) all but d
Answer: B
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What is the approximate range of masses that newborn main-sequence stars can have?
A) 0.1 to 150 solar masses B) 0.001 to 1500 solar masses C) 0.1 to 1500 solar masses D) 0.001 to 10 solar masses E) 0.1 to 10 solar masses
An electron is trapped in an infinite square well (a box) of width 6.88 nm
Find the wavelength of photons emitted when the electron drops from the n = 5 state to the n = 1 state in this system. (c = 3.00 × 108 m/s, h = 6.626 × 10-34J ? s, mel = 9.11 × 10-31 kg) A) 6.49 ?m B) 5.45 ?m C) 5.91 ?m D) 7.07 ?m
Significant Figures: What is 
expressed to the correct number of significant figures?
A. 0.91 B. 0.911 C. 0.9108 D. 0.9
Uranus never grew massive enough to capture large amounts of gas from the solar nebula as Jupiter and Saturn did, so it has much less hydrogen and helium
Indicate whether the statement is true or false