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Which of these is NOT a name of a fluorophore (a fluorescent molecule)? (40 points)

	fluorescein
	Nile Red
	Texas Red
	Caesar Purple
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written by sam • topics: science block unblock • physical chemistry block unblock • photophysics block unblock

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What describes how ceiling star stickers glow in the dark? (30 points)

	bioluminescence
	phosphorescence
	fluorescence
	chemiluminescence
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written by sam • topics: science block unblock • pop culture block unblock • physics block unblock • physical chemistry block unblock • quantum mechanics block unblock and 3 more » • light • spectroscopy • nature

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Why does ice float in water? (10 points)

	convection currents
	surface tension
	ice is less dense than water
	ice has tiny air bubbles in it
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written by sam • topics: science block unblock • physics block unblock • physical chemistry block unblock

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How many confirmed elements are on the current standard periodic table of elements? (40 points)

	100
	117
	118
	126
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written by chemqueen • topics: chemistry block unblock • physical chemistry block unblock • science block unblock

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How long/short is an attosecond? (30 points)

	10^-18
	10^15
	10^18
	10^-15
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written by rickdick • topics: laser block unblock • physical chemistry block unblock • physics block unblock • time block unblock

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Which of the following CANNOT be measured with nuclear magnetic resonance (NMR) spectroscopy? (40 points)

	Temperature
	Rate of diffusion
	Light absorption in the visual range
	Charge distribution
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written by davideisenberg • topics: science block unblock • chemistry block unblock • physical chemistry block unblock • natural science block unblock • measurements block unblock

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Which of the following CANNOT be measured with nuclear magnetic resonance (NMR) spectroscopy? (40 points)

	Rate of diffusion
	Charge distribution
	Temperature
	Light absorption in the visual range
	Skip this question

written by davideisenberg • topics: science block unblock • chemistry block unblock • physical chemistry block unblock • natural science block unblock • measurements block unblock

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Which of the following CANNOT be measured with nuclear magnetic resonance (NMR) spectroscopy? (20 points)

	Charge distribution
	Rate of diffusion
	Light absorption in the visual range
	Temperature
	Skip this question

written by davideisenberg • topics: science block unblock • chemistry block unblock • physical chemistry block unblock • natural science block unblock • measurements block unblock

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Which of the following CANNOT be measured with nuclear magnetic resonance (NMR) spectroscopy? (50 points)

	Charge distribution
	Temperature
	Light absorption in the visual range
	Rate of diffusion
	Skip this question

written by davideisenberg • topics: chemistry block unblock • physical chemistry block unblock • physics block unblock • physical science block unblock • measurements block unblock

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