What is the mass of a solution that has a density of 0.755g/ml and a volume of 50.0 ml

This large tectonic plate is bounded on three sides by whats know as the ring of fire. what is the name of this tectonic plate? a) pacific plate b) eurasian plate c) north american plate d) indo- australian plate plz it's science but there's no option for science so i picked chemistry

Is a pencil falling to the floor anon contact force, a force, or a contact force

Calculate the concentration of all species in a 0.165 m solution of h2co3.