Answer:
36.0 mL
Explanation:
First, write the balanced reaction.
2HCl + Ba(OH)₂ → BaCl₂ + 2H₂O
Calculate the moles of Ba(OH)₂:
0.500 mol/L × 0.0450 L = 0.0225 mol Ba(OH)₂
Use stoichiometry to find moles of HCl:
0.0225 mol Ba(OH)₂ × (2 mol HCl / mol Ba(OH)₂) = 0.0450 mol HCl
Now calculate the volume needed at the given concentration.
0.0450 mol HCl × (1 L / 1.25 mol) = 0.0360 L HCl
You need 36.0 mL of 1.25 M HCl.
I would say letter C.
"the oxygen atom<span> attracts </span>electrons<span> a bit </span>more<span> strongly </span>than the hydrogen atoms. The unequal sharing of electrons<span> gives the </span>water<span> molecule a slight </span>negative charge<span> near its </span>oxygen atom <span>and a slight </span>positive charge<span> near its </span>hydrogen atoms<span>." (middleschoolchemistry.com)</span>
Explanation: Ca generally loses two electrons from its outer shell to form a Ca2+ ion.
Hope this helped!!
Could I get brainliest by chance?!
Answer: 26.7 moles
Explanation: 
As can be seen from the balanced chemical equation 2 moles of hydrogen combine with 1 mole of oxygen to give two moles of water.
1 mole of oxygen give = 2 moles of water.
Thus 13.35 moles of oxygen give=
of water.
