Answer:
I believe 1+
Explanation:
when Na loses 1 electron in the outer shell it has 8 valence protons on it's new most outer shell. so now it has 11 protons and 10 electrons. that extra proton (positively charged) adds one extra charge. so +1
Answer:
The line of sight must be perpendicular to measuring scale to avoid parallax error. Formation of bubbles inside the cylinder should be completely avoided.
Explanation:
The HCl is a strong acid, that is, it is fully consumed <span>in the reaction.
HCl(aq) ------------> H</span>₃O⁺(aq) + Cl⁻(aq)
↓ ↓ ↓
10⁻⁴ M 0 0
-10⁻⁴ +10⁻⁴ +10⁻⁴
_____________________________________
0 + 10⁻⁴ M <span> + 10⁻⁴ M
PH = - log [ H</span>₃O⁺ ]
PH = - log [ <span>10⁻⁴]
<span>PH = 4.0</span></span>
