If vinegar only contains 5% acetic acid, how many grams of acetic acid will there be in 500 grams of vinegar?

Step 1. Calculate the volume of acetic acid

Volume

=

250.0

mL vinegar

×

5 mL acetic acid

100

mL vinegar

=

12 g acetic acid

Step 2. Calculate the mass of acetic acid

The density of acetic acid is 1.05 g/mL.

Mass of acetic acid

=

12

mL acetic acid

×

1.05 g acetic acid

1

mL acetic acid

=

13 g acetic acid

Note: The answer can have only one significant figure because that is all you gave for the percent concentration. However, I calculated the result to two significant figures.

you need to take a look at the periodic system in order to sort these elements into pairs that would most likely exhibit similar chemical properties. first, you need to find elements that are found in the same group (groups are vertical in the periodic system), and then to see whether they have the same valence number. if they meet these criteria, they will have similar properties.

the first pair: ne (neon) and kr (krypton), are noble gases found in group 8

the second pair: li (lithium) and k (potassium), found in group 1

the third pair: s (sulfur) and te (tellurium), found in group 6

the earth would become to overheated and everything alive on it will eventually die from overheating. plants will eventually die as well, water will evaporate, and it will be nothing but a hot planet without anything living on it.