MULTIPLE CHOICE How many half lives would it take for a 10 g sample of carbon-14 to have only 2.5 g left?
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As changes in energy levels of electrons increase, the frequencies of atomic line spectra they emit

Liquid from a brewery fermentation contains 10% ethanol and 90% water. part of the fermentation product (50,000 kg/h) is pumped to a distillation column on the factory site. under current operating conditions, a distillate of 45% ethanol and 55% water is produced from the top of the column at a rate of one-tenth that of the feed. what is the composition of the waste "bottoms" from the still?

Describe the properties of sodium, chlorine, and sodium chloride