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IRINA_888 [86]
3 years ago
14

First person with the right answer gets brainliest thanks (btw the numbers on the right are the answers choose the right one)

Chemistry
1 answer:
kap26 [50]3 years ago
6 0
Molar mass of FE2O3=2(55.85)+3(16)=159.7

2.56g*1mol/159.7*2mol/1mol*55.85g/1mol=1.79g
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Connect and Apply scientific knowledge to explain the following situations:
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Answer:

b.Rearrange the two equations to make each variable the focus (you will end up with three variations for each equation).

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2 years ago
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Margaret [11]
As mentioned above, phosphoric acid has 3 pKa values, and after 3 ionization it gives 3 types of ions at different pKa values:

H₃PO₄(aq) + H₂O(l) ⇌ H₃O⁺(aq) + H₂PO₄⁻ (aq)         pKₐ₁ 
<span>

</span>H₂PO₄⁻(aq) + H₂O(l) ⇌ H₃O⁺(aq) + HPO₄²⁻ (aq)       pKₐ₂


HPO₄²⁻(aq) + H₂O(l) ⇌ H₃O⁺(aq) + PO₄³⁻ (aq)          pKₐ₃ 


At the highest pKa value (12.4) of phosphoric acid, the last OH group will lose its hydrogen. On the picture I attached, it is shown required protonated form of phosphoric acid before reaction whose pKa value is 12.4.


6 0
3 years ago
Give two examples of halohydrin formation​
BigorU [14]

Answer:

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8 0
2 years ago
What type of decay characterizes the change of radioactive nuclides to their respective daughter products?
tigry1 [53]
I believe the correct answer is the second option. The type of decay that characterizes the change of nuclides to their respective daughter products would be exponential decay. This type of decay is characterized by the decrease of quantity of a material according to the equation y=ab^x.
8 0
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Qu 4.
Anna11 [10]

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It's the second one down.

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Gold

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3 0
3 years ago
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