<span>Because of the octet rule, it is easy to predict the charge of the ion of an element. Look at the number of valence electrons the element has. If it is between 1 and 4 the atom will most likely loose those electrons to become stable, making it a positive ion with the charge of the number of electrons it will lose. If it has between 4 and 8 valence electrons the atom will most likely gain electrons to achieve a full outer ring of 8 electrons. Its atom will have a negative charge of the number of electrons it needs to have 8 total. Hope I Helped If You Don't Mind May I Have A Brainliest Answer Please? :)</span>
Ba is the the symbol for Barium
Answer:
41.1%
Explanation:
First write the balanced reaction:
CaCO₃ + H₂SO₄ → CaSO₄ + H₂O + CO₂
Now calculate the theoretical yield:
49.3 g CaCO₃ × (1 mol CaCO₃ / 100 g CaCO₃) = 0.493 mol CaCO₃
0.493 mol CaCO₃ × (1 mol H₂O / 1 mol CaCO₃) = 0.493 mol H₂O
0.493 mol H₂O × (18 g H₂O / mol H₂O) = 8.87 g H₂O
Now calculate the % yield:
3.65 g H₂O / 8.87 g H₂O × 100% = 41.1%
