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Gekata [30.6K]
3 years ago
12

What is the formula for Heptaphosphorous pentoxide?

Chemistry
1 answer:
slega [8]3 years ago
7 0

Answer:

P7F8

Explanation:

correct formula isP7F8

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Where do elements in the human body tend to be located on the PERIODIC TABLE? (NOT PERCENTAGES PLEASE)​
Ghella [55]

Answer:

Oxygen, Carbon, Hydrogern, Nitrogen, Sulfur, and Chlorine are all non-metals

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Explanation:

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3 years ago
(pls help!) What mass of oxygen atoms is required to react completely with 30 u of hydrogen atoms?​
Nataly [62]
  • 2H_2+O_2—»2H_2O

One mole Hydrogen need 1/2mol O_2 .

Moles of Hydrogen

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6 0
2 years ago
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What is the ph of a solution of 1.0 × 10-9 m naoh (include 1 digit after the decimal in your answer)?
Eduardwww [97]

Answer:

pH=5

Explanation:

Hello,

In this case, for the dissociation of the sodium hydroxide into sodium and hydroxyl ions we have:

NaOH\rightarrow Na^++OH^-

Which is a 100% dissociation as sodium hydroxide is a strong base, therefore, the concentration of the hydroxyl ions are 1.0x10⁻⁹. For that reason, the pOH could be computed as:

pOH=-log([OH^-})=-log(1.0x10^{-9})=9

Finally, from the definition of pH, we have:

pH+pOH=14\\pH=14-pOH=14-9\\pH=5

Best regards.

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3 years ago
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A lab director asks two students, Lydia and Damien, to each select a bottle of a concentrated weak base. When they reach the
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Answer:

First one is 5.0 M ammonia and the Second one ?

Explanation:

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Which of the following is true about petroleum?
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Petroleum is a significant source of US greenhouse gas emissions.
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