Calculate the weight in grams of a double-helical dna molecule stretching from the earth to the moon (32 km). assume that the dna double helix weighs per 1000 nucleotide pairs and that each base pair extends 3.4 å

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explanation: a formula which shows the arrangement of atoms in the molecule of a compound

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distance, luminosity, brightness, radius, chemical composition, and temperature

each chemical family is represented as a group or column on the periodic table. based on chemical properties, there are 6 types of chemical families. group 1 represents alkali metals, group 2 represents alkaline earth metals, groups 3 to 12 represent transition metals, groups 13 to 16 represent non-metals and other metals, group 17 represents halogens and group 18 represents noble gases.