An 80 proof brandy is 40.0% (v/v) ethyl alcohol. The "proof" is twice the percent concentration of alcohol in the beverage.How many milliliters of alcohol are present in 700mL of brandy?

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To find out how many milliliters of alcohol are present in 700 mL of brandy, we need to calculate the volume of ethyl alcohol based on the given percent concentration.

First, let's convert the percent concentration into a decimal by dividing it by 100:

40.0% (v/v) = 40.0/100 = 0.40

Next, let's calculate the volume of ethyl alcohol in 700 mL of brandy. The "proof" is twice the percent concentration, so we can multiply the volume of brandy by the decimal concentration:

Volume of ethyl alcohol = 700 mL × 0.40 = 280 mL

Therefore, there are 280 milliliters of alcohol present in 700 mL of brandy.

0.4*700 = ?