Chemistry, 13.07.2019 18:40 jacquetpaul1969
Atiny pencil mark just visible to the naked eye contains about 3 × 1017 atoms of carbon. what is the mass of this pencil mark in grams?
Answers: 1
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Which function is performed by earths atmosphere? a. ultraviolet rays are prevented from reaching the ozone layer. b. earths temperature is raised and moderated by trapping in heat c. charged particles from the sun are prevented from reaching earth. d. magnetic charges from space are prevented from reaching earths surface.
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Determine the wavelength of the light absorbed when an electron in a hydrogen atom makes a transition from an orbital in the n=3 level to an orbital in the n=7 level.
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Which metal exist in liquid state and can be cut with knife ?
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Atiny pencil mark just visible to the naked eye contains about 3 × 1017 atoms of carbon. what is the...
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