Explanation:
Correct option is C)
HCl is most polar due to the high electronegativity of Cl.
The answer is c. 0.25 because it starts at 1, then after 1500 years it's a .5 and then at another 1500 it's .25. It's called a half life because it'll be in half after the time period ends.
Hg(l) + O2<span>(g) </span>→ HgO2(s)
C(graphite) + O2<span>(g) </span>→ CO2(g)
C(diamond) + O2<span>(g) </span>→ CO2(g)
However, this is always optional.
Answer:
Explanation:
Mg + O₂ ⟶ MgO
1. Balance O.
We have 2 atoms of O on the left and 1 O on the right.
Put a 1 in front of O₂ and a 2 in front of MgO.
Mg + <u>1</u>O₂ ⟶ <u>2</u>MgO
2. Balance Mg:
We have fixed 2 Mg on the right. We need 2 Mg on the 2 Mg on the left. Put a 2 in front of Mg.
<u>2</u>Mg + <u>1</u>O₂ ⟶ <u>2</u>MgO
Every formula now has a coefficient. The equation should be balanced.
3. Check that atoms balance:
The equation is now balanced.