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Chemistry, 22.06.2019 06:00
An atom of sodium-23 (atomic number = 11) has a positive charge of +1. give this information, how many electrons does it have? how many proteins and neutrons does this atom have
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Chemistry, 22.06.2019 09:00
George is a dalmatian puppy. describe what happens to light that allows you to see george’s black and white coat.
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Chemistry, 22.06.2019 12:00
Why are people not able to skip a dive to the deepest part of the ocean
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