John placed a number of small stones into a plastic container of water and froze it what kind of mixture did john had and why

What defines the mass number of an isotope? a. the sum of the neutrons and protons b. the sum of the neutrons and electrons c. the number of neutrons d. the number of protons

Ineed extreme for task 2. my student number is 571721. many to whoever solves this correctly, im in debt to you.

Match these items. 1. coulombs __force 2. ohms __emf 3. centimeters __resistance 4. newtons __charge 5. volts __length