a particular beer is 6.50% ethanol by volume. If a single beer contains 750 ml of beer, what mass in g of ethanol is present in the bottle? The density of ethanol is 0.789 g ethanol/mL.

Answer 1

We are given the density of ethanol in g/mL and are asked to find how many g of ethanol is in the beer, which means we need to first determine how many mL of ethanol are in the beer.

We are told that a beer bottle is 750mL and that the beer is 6.50% ethanol by volume. We can calculate to find that 6.50% of 750mL is 48.75mL, so now we know that there are 48.75mL of ethanol in the beer.

Now that we have a known volume of ethanol (48.75mL), we can use the given density of ethanol (0.789g/mL) as a conversion factor to determine the mass in g of ethanol.

48.75mL * 0.789g/mL = 38.46g of ethanol

So there are 38.46g of ethanol in the beer bottle. Hope this was helpful!