how can you determaine that a coin is not pure silver if you know the mass and volume of the coin plz hurry

Identify two types of chemical bonding in the source of dietary potassium

Which is true of a liquid? it has a definite volume but not a definite mass.it has a definite mass but not a definite volume.it has a definite volume but not a definite shape.it has a definite shape but not a definite volume.

Which of the following describes a situation where competition between producers exists