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Take a look at this dandelion. the yellow flower on the right is pollinated and the seeds on the left are transported by
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Asample of tin (ii) chloride has a mass of 0.49 g. after heating, it has a mass of 0.41 g. what is the percent by mass of water in the hydrate? %
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If nitrogen (n) has 2 naturally occurring isotopes, nitrogen-14 (78.3%) and nitrogen-16 (21.7%), wha...
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