A student takes a measured volume of 3. 00 M HCl to prepare a 50. 0 mL sample of 1. 80 M HCl. What volume of 3. 00 M HCl did the student use to make the sample? Use M subscript i V subscript i equals M subscript f V subscript f. 3. 70 mL 16. 7 mL 30. 0 mL 83. 3 mL.

C) electrons encircling a nucleus with neutrons and protons

Perimeter? wheres the answers

Ibelieve it's temperature! i'm not 100% sure.

Well you can immediately rule out a and d because if a metal were to lose or gain protons, then it would become a different element all together. the answer here is b because the positive symbol with a number refers to how many electrons the metal can give away to become stable.