Group 18 is known as the Noble/ Inert Gases
<span>From the given balanced chemical reaction, it can be seen that each aluminum atom gains loses 3 electrons. Also, each copper atoms gains 2 electrons. The choice that would best give us the described scenario above is choice number 2. That is Each Al loses 3e- and each Cu gains 2e-. </span>
Answer:
Both have the same amount of particles.
Explanation:
From Avogadro's hypothesis, we understood that 1 mole of any substance contains 6.02×10²³ particles.
This implies that 1 mole of Hydrogen contains 6.02×10²³ particles. Also, 1 mole of oxygen contains 6.02×10²³ particles.
Thus, 1 mole of Hydrogen and 1 mole of oxygen contains the same number of particles.
Answer:
Mass of CuCl₂ = 23.125 g
Explanation:
Given data:
Number of moles of CuCl₂ = 0.172 mol
Mass of CuCl₂ = ?
Solution:
First of all we will calculate the molar mass of CuCl₂.
Molar mass of CuCl₂ = 63.546 + 2(35.5)
Molar mass of CuCl₂ = 134.45 g/mol
Formula:
Number of moles = mass / molar mass
Mass = Number of moles × molar mass
Mass = 0.172 mol × 134.45 g/mol
Mass = 23.125 g