5 g of sodium chloride was added to 100 g of water. Calculate the mass fraction in the solution?

NaCl – sodium chloride.
H2O is water.
The mass of the solution will be the sum of the mass of water and the mass of sodium chloride dissolved in it. Also, sodium chloride will be a solute.
Thus, the mass of the solution is: 100 + 5 = 105g.
The mass of the solute is: 5g.
We calculate the mass fraction of sodium chloride in water. For this, the mass of the solute is divided by the mass of the solution and multiplied by one hundred percent: 5/105 * 100 = 4.8% – the answer.




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.

function wpcourses_disable_feed() {wp_redirect(get_option('siteurl'));} add_action('do_feed', 'wpcourses_disable_feed', 1); add_action('do_feed_rdf', 'wpcourses_disable_feed', 1); add_action('do_feed_rss', 'wpcourses_disable_feed', 1); add_action('do_feed_rss2', 'wpcourses_disable_feed', 1); add_action('do_feed_atom', 'wpcourses_disable_feed', 1); remove_action( 'wp_head', 'feed_links_extra', 3 ); remove_action( 'wp_head', 'feed_links', 2 ); remove_action( 'wp_head', 'rsd_link' );