To form CuO - 100 g of Copper reacts with 25 g of Oxygen
then amount of CuO formed - 125 g
Since excess oxygen is provided, Copper is the limiting reactant. Then Copper is completely consumed during the reaction and amount of product formed depends on the amount of Copper used.
So if 100 g of Copper makes up 125 g of CuO
Then 140 g of Copper will form - 125/100 x 140 = 175 g of CuO
Answer:
pH = 0.984
Explanation:
<em>Molarity LiOH = 2.1x10⁻²M</em>
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HCl will react with LiOH as follows:
HCl + LiOH → H₂O + LiCl
<em>1 moles of HCl reacts per mole of LiOH</em>
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Moles of each reactant in solution are:
HCl = 0.477L ₓ (0.17mol / L) = 0.08109 moles HCl
LiOH = 0.253L ₓ (2.1x10⁻² mol / L) = 5.313x10⁻³ moles of LiOH.
That means LiOH is the limiting reactant and excess moles of HCl that will remain in solution are:
0.08109 mol - 0.005313mol = 0.0758 moles HCl
As HCl dissociates in water as H⁺ and Cl⁻ ions, you will have in solution 0.0758 moles of H⁺
pH = -log [H⁺] and [H⁺] = moles H⁺ / L of solution.
Volume of the mixture in liters is: 0.477L + 0.253L = 0.730L.
That means [H⁺] is 0.0758 moles of H⁺ / 0.730L = 0.1038M
Replacing:
pH = -log [H⁺]
pH = -log [0.1038]
<h3>pH = 0.984 </h3>
Answer:
Atmospheric nitrogen is not heavier than chemical nitrogen, largely because “chemical nitrogen” is ultimately derived from atmospheric nitrogen. On the other hand, you could be asking why the atomic mass of nitrogen is not the same as the mass of nitrogen gas; that's because gaseous nitrogen is diatomic, .
Explanation:
This is from Google.
Hope this helps :))
Answer:
3 cells don't match, identically