Calculate the mass fraction of copper in a brass sample obtained by fusing 17.5 g of zinc with 32.5 g of copper.

univerkov | September 29, 2021 | education

Mass fraction in percent is the ratio of the mass of the component to the total mass of the sample (solution, etc.), multiplied by 100%. D A (%) = (m A / m total) * 100%.
In a brass alloy sample, D Cu (%) = 32.5: (17.5 + 32.5) * 100% = 32.5: 50 * 100% = 65%.

One of the components of a person's success in our time is receiving modern high-quality education, mastering the knowledge, skills and abilities necessary for life in society. A person today needs to study almost all his life, mastering everything new and new, acquiring the necessary professional qualities.