vorhees2406
27.04.2021 •
Mathematics
A chemist has 10 ml of a solution which contains a 30% concentration of acid. How many ml of pure acid (that is, 100% acid) must be added in order to increase the concentration to 50%?
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Ответ:
Durability
Step-by-step explanation:
Durability in money is when objects used as money can withstand being worn out or torn. In this case, the bill is still used though it has a tear therefore it's an example of durability.
Hope it helps :)