Answer:
Explanation:
Hello!
In this case, given this is an acid-base neutralization and we are considering a diprotic acid, we can write the following mole-mole relationship:
It means that the moles of acid can be computed given the volume and concentration of NaOH:
It means that the approximate molar mass of the acid is:
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Answer:
The line in the faster rotating star is broader.
Explanation:
Answer: oprion <span>A. Catalysts can only increase the rate of reaction for compounds that do react.
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Explanation:
Such as the right choice states a catalyst cannot make react two materials that cannot chemically react.
The catalysts modify the rate (speed) of a reaction between chemicals.
The definition of catalyst is a substance that increases the speed of a chemical reaction by modifying the activation energy but that is not consumed in the reaction.
Then three facts must be highlithed about catalyst:
1) Catalysts are not included in the chemical equation since they do not increase the amount of product that can be obtained (they do not change the theoretical yield of the reaction).
2) Catalysts change the path that the reactants take to yield the products, which is how the energy activation is changed.
3) As consequence, catalysts are not consumed during the reaction.
Hey there!:
Volume of rainfall = Area X height
Height = 1 in = 0.254 dm
1mile2 = 2.59 X 10⁸ dm²
so 1300 miles² = 3367 *10⁸ dm²
Volume = 0.254 * 3367 * 10⁸ = 855.218 * 10⁸ dm³
Also,
H2SO4 ionizes as :
H2SO4 --> H⁺ + HSO4⁻
Ka1 is very high so it completely dissociates , due to first dissociation [H⁺] = Concentration of H2SO4
HSO4⁻ --> H⁺ + SO₄⁻²
We also consider it as high dissociation :
so each mole of H2SO4 will give 2 moles of H⁺ (proton)
pH = 3.30 = -log[H⁺]
So [H+] = 0.000501 M = 0.000501 moles / L or moles / dm³
Volume = 855.218 * 10⁸dm³
so moles of H+ present in this volume:
= 0.000501 * 855.218 *10⁸ = 4.28* 10⁷moles
So moles of H2SO4 = 4.28 * 10⁷ / 2 = 2.14 * 10⁷ moles
Molecular weight of H2SO4 = 98 g / mol
Mass of H2SO4:
Moles X molecular weight = 98 * 2.14 X 10⁷ grams = 209.72 * 10⁷ grams in kg:
= 2.09 X 10⁶Kg
Hope that helps!