Answer:
b
Explanation:
im pretty sure could be wrong
6.75 moles of H₂
Explanation:
We have the following balanced chemical reaction:
Mg + 2 HCl → MgCl₂ + H₂
From the chemical reaction we deduce that if 1 mole of Mg is reating with 2 moles of HCl then 8.30 moles of Mg is reaction with 16.60 moles of HCl, quantity which is over our available 13.5 moles of HCl. The limiting reactant is HCl.
Knowing this we devise the following reasoning:
if 2 moles of HCl produces 1 mole of H₂
then 13.5 moles of HCl produces X moles of H₂
X = (13.5 × 1) / 2 = 6.75 moles of H₂
Learn more about:
balancing chemical equations
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Ans: pH = 9
<u>Given:</u>
Concentration of H+ ions [H+] = 1.0*10⁻⁹ M
<u>To determine:</u>
The pH of the above solution
<u>Explanation:</u>
pH = -log[H+]
pH = -log(1.0*10⁻⁹) = 9
0.9mole of Fe
Explanation:
Given parameters:
Mass of Fe = 50g
Unknown:
Number of moles of iron = ?
Solution:
The number of moles is the particle that contains the avogadro's number of particles.
It is a unit for reporting chemical measurement.
To find the number of moles of a substance;
Number of moles =
Molar mass of Fe= 56g/mol
Number of moles = = 0.9mole of Fe
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Number of moles brainly.com/question/1841136
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well I know that sand do disappear in water.And sand isnt the the right thing for gowing plants.And sand will hold water