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How many sublevels are contained in the second shell (n = 2) of a given atom?
24-Hour
refers to a full day period, consisting of 24 consecutive hours.
Powdered Preservative
A substance in powder form added to foods, pharmaceuticals, and other products to prevent decomposition by microbial growth or by undesirable chemical changes.
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A device or vessel used to gather and hold substances, often for laboratory analysis or medical purposes.
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