Se amestecă 120 g sare grunjoasă cu apă. Rezultă un amestec eterogen care se filtrează. Știind că pe hârtia de filtru rămân 20 g substanțe insolubile în apă determină puritatea sării grunjoase.

What are transitions between a liquid and a solid called? identify which way they are transitioning

Most materials are not magnetic because their magnetism has worn off. their magnetic domains are arranged randomly. they lack magnetic fields. earth’s heat has destroyed their magnetism.

Astudent pours 10.0 g of salt into a container of water and observes the amount of time it takes for the salt to dissolve. she then repeats the process using the same amounts of salt and water but this time she slowly stirs the mixture while it is dissolving. the student performs the experiment one more time but this time she stirs the mixture rapidly. the dependent variable in this experiment is: time for salt to dissolve speed of stirring amount of water mass of salt