The ppm is denifite by how many parts of the solute is present in a one million parts of the solution. Remembring that the solute should be in "mg" and the solutions shoud be in "kg".
Number 3If you notice any mistake in my english, please let me know, because i am not native.
Answer:
The concentration of the dilute sample will be 0.361 g/ml
Explanation:
If a solution is diluted into 1:10 ratio then the amount of solute of that solution will be decreased by 10 times.
The initial concentration of the stock solution was 3.61g/ml but when the solution is diluted in 1:10 ratio the solute concentration is also decreased by 10 times.SO at present the solute concentration becomes 3.61/10=0.361 g/ml.
Non metals tend to form covalent bond
A molecule is a matter that moves around fast
The answer would be B, 7 valence electrons. <span>F is located
in the 1s-orbital and the second energy level, which in fluorine's case
is the outermost energy level, meaning it has <span>7 electrons</span></span>