Gastric acid pH can range from 1 to 4, and most of the acid is HCl. For a sample of stomach acid that is 2.59×10−2 M in HCl, how many moles of HCl are in 19.1 mL of the stomach acid?

Express the amount to three significant figures and include the appropriate units.

That Is 3.79×10−3 M In HCl

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explanation:

it's all four options.