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Fed [463]
3 years ago
11

How many atoms of each element are in the chemical formula P2O5?

Chemistry
1 answer:
marshall27 [118]3 years ago
4 0

Answer:A

Explanation:2 phosphorus and 2 oxygen

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A buffer is made by dissolving H3PO4 and NaH2PO4 in water.
xeze [42]

Answer:

(a) H₃O⁺(aq) + H₂PO₄⁻(aq) ⟶ H₃PO₄(aq) + H₂O(ℓ)

(b) OH⁻(aq) + H₃O⁺(aq) ⟶ 2H₂O(ℓ)

Explanation:

The equation for your buffer equilibrium is:

H₃PO₄(aq) + H₂O(ℓ) ⇌ H₃O⁺(aq)+ H₂PO₄⁻(aq)

(a) Adding H₃O⁺

The hydronium ions react with the basic dihydrogen phosphate ions.

H₃O⁺(aq) + H₂PO₄⁻(aq) ⟶ H₃PO₄(aq) + H₂O(ℓ)

(b) Adding OH⁻

The OH⁻ ions react with the more acidic hydronium ions.

OH⁻(aq) + H₃O⁺(aq) ⟶ 2H₂O(ℓ)

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3 years ago
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Which model of an atom was molded after the solar system.
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The answer is the bohr model was molded after the solar system
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3 years ago
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Which element is least likely to undergo a
aleksley [76]
The element which is least likely to undergo a chemical reaction is (4) neon.
The reason for this is because neon is a noble gas, which means that it doesn't react with other elements as well.
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A boy fell off a 100 foot ladder. But he did not get hurt. Why not?
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He was not all the way up the ladder he was only on the first couple steps
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5. A standardized mass was known to weigh exactly 5.0000g. It was weighed on a newly
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Answer:

Absolute error = 0.001

% Error = 002 5

Explanation:

The absolute error is the the difference in the measured value and the actual value of a quantity.

Here the actual value is 5.0000 grams

The measured value is 5.001 grams

Absolute error

5.001 - 5.000\\= 0.001

Percent error

= \frac{AE}{AV}

Where AE stands for absolute error and AV stands for absolute value.

= \frac{0.001}{5.000} * 100\\

= 0.02 %

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3 years ago
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