Answer: Dmitri Mendeleev was a Russian chemist who lived from 1834 to 1907. He is considered to be the most important contributor to the development of the periodic table. His version of the periodic table organized elements into rows according to their atomic mass and into columns based on chemical and physical properties
2Ca + 2H2O —-> Ca(OH)2 + H2
Answer:
The answer to this question is; <em>1.08 x 10^5</em>
Explanation:
This is the correct option because
600 x 180 = 108,000
108,000. -> move the decimal over 5 times to get a number between 1 and 10
1.08 x 10^5
Answer:
the percentage by mass of Nickel(II) iodide = 23.58%
Explanation:
% by mass of solute = (mass of solute/mass of solution) x 100%
% by mass of NiI2 = (mass of NiI2/mass of solution) x 100%
% by mass of NiI2 = (5.47 grams/23.2 grams) x 100% = 23.58% m/m
