What does this question mean
21.69mL - 20.70mL = .99mL Fe
7.8 g / .99 mL = 7.9g/mL
I THINK that that is true. It's just weathering the rock down not change composition. Lemme know if you get it right please! (:
Answer:
Na has atomic number 11
which is less than magnesium has atomic number 12
ANSWER IS D
Explanation:
aluminum or Al is atomic 13 and Ca or calcium is atomic number 20 and rubidium or Rb is atomic number 37
The concentration of NaOH is 25.00% by mass, it means that 25.00% of the mass of the solution is of NaOH. Hence: