Mechanical machine
poop on it
<u>Answer:</u> The concentration of solution is 0.342 M
<u>Explanation:</u>
To calculate the molarity of solution, we use the equation:
We are given:
Mass of solute (Sodium chloride) = 15 g
Molar mass of sodium chloride = 58.5 g/mol
Volume of solution = 750 mL
Putting values in above equation, we get:
Hence, the concentration of solution is 0.342 M
Ions are formed when atoms lose or gain electrons in order to fulfill the octet rule and have full outer valence electron shells. When they lose electrons, they become positively charged and are named cations. When they gain electrons, they are negatively charged and are named anions.
Answer: Y is Hydrogen.
Explanation: Based on the valence electrons, X and Y are Group 1 Elements and Y is a Halogen. Based on the differences between X and Y and the similarities between Y and Z, we can say that Y is Hydrogen, the only nonmetal with 1 valence electron. This is based on the fact that it has typical nonmetal characteristics: low melting and boiling points.
