ethyl alcohol has a density of .789 g/mL. what is the volume of ethyl alcohol that has a mass of 30.30g?

Question

chem 1151

Answer 1

If you're in high school, use the FENCE method of conversion.

Note you can think of "density" as 1 mL = .789 g or 1ml/.789 g, You do this so you can cancel gram units.

30.30 g x 1 mL/0.789 g = the g's cancel out, leaving just mL

which is what you want. or 38.40 mL.

Of course in college, etc, you just call this Calculation.

Check : Divide 30.30 g by 38.40 and you should get 0.789 g/mL

which, you do 30.30g/38.40 mL = 0.789 = density

Answer 2

start up with the definition of Density. Density = (mass/volume). in simple terms rewrite the density equation, fixing for volume (considering the indisputable fact that's what we'd go with to understand). D=m/V V=m/D... so volume = mass divided by employing density Plug in the given values. be careful with contraptions, you're given a million.50 KILOgrams of alcohol, however the density is given in GRAMS. Convert kg to grams to have consistent contraptions. EtOH=abbreviation for Ethyl Alcohol V=(a million,500 g EtOH)/(0.seventy 9 g EtOH/mL)= a million,500/0.seventy 9 = a million,898 mL EtOH word above that the "g EtOH" contraptions canceled, leaving us with mL EtOH, it somewhat is what we'd like. Now in simple terms convert mL EtOH to quarts employing here conversion element: 1mL=0.00105 quarts considering the fact that we'd like the mL contraptions to cancel, we use the conversion element written in this variety: (0.00105 quarts/a million mL) (a million,898 mL EtOH) x (0.00105 quarts/a million mL)= a million.ninety 9 or 2.0 quarts EtOH. This answer is rounded so as that we've 2 significant figures.

Answer 3

m = d x v or v = m / d , mass(m)=30.30g and density(d)=0.789 g/mL so volume(v)=30.30/0.789 =38.40 mL

Answer 4

30.3/0.789=38.4 ml