If a baby is born "bein hashmashot" how do we count the days till the 8th for the bris? For example, if it's bein hashmashot Sunday evening, will the bris be the following Sunday or following Monday because you could say that since it's after shkiya that it's the following day?
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periodic trends - Comparing radii in lithium, beryllium, magnesium, aluminium and sodium ions
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I am a confused (and somewhat anal retentive) non-chemist who is trying to understand what pH is. I have come to understand it is a measure ...
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