If an element has 15 protons and 18 electrons it is called an___. It's charge is 1 Isotope; 3-
2 Isotope; 3+
3lon; 3-
4ion 3+

Water is important for the of cells. a: size, shape, and temperature b: temperature, color, and odor c: color, odor, and size d: shape, temperature, and color

Atrain travels 74 kilometers in 3 hours, and then 81 kilometers in 5 hours. what is its average speed?

What is the mass of 0.46 mil of mgcl2