By lowering temperature from liquid to solid, atoms lose some of their energy, when atoms slow down, they move close together and make the matter denser.
The picture is blurry on my hand
He wrote a paper that described the photoelectric effect.
Answer:
5.83 M
Explanation:
Given data:
Volume of HBr = 125.0 mL
Molarity of HBr solution = 3.5 M
Volume of LiOH = 75.0 mL
Molarity of LiOH = ?
Solution:
Formula:
M₁V₁ = M₂V₂
M₁ = Molarity of HBr
V₁ = Volume of HBr
M₂ = Molarity of LiOH
V₂ = Volume of LiOH
Now we will put the values.
3.5 M ×125.0 mL = M₂ × 75.0 mL
437.5 M.mL = M₂ × 75.0 mL
M₂ = 437.5 M.mL / 75.0 mL
M₂ = 5.83 M
Yield of reaction = 80%
<h3>Further explanation
</h3>
Reaction
Cu(NO₃)₂ (aq) + Na₂S (aq) ⇒ 2 NaNO₃ (aq) + CuS (s)
mol Cu(NO₃)₂ :(MW 187,56 g/mol)
mol Na₂S :(MW 78,0452 g/mol)
Limiting reactant⇒Na₂S( 2 < 2.5)
mol of NaNO₃ (MW = 84,9947 g/mol)
mass NaNO₃ (theoretical)
