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Genrish500 [490]
3 years ago
9

6/10

Chemistry
1 answer:
hichkok12 [17]3 years ago
5 0

Answer: B

Explanation: I answered randomly

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A sample of hydrogen gas contains 4.8 x 1026 molecules of hydrogen. How many moles of hydrogen is this?
Travka [436]

Answer:

797.34 moles of H₂

Explanation:

From the question given above, the following data were obtained:

Number of molecules of H₂ = 4.8×10²⁶ molecules

Number of mole of H₂ =?

From Avogadro's hypothesis,

1 mole of H₂ = 6.02×10²³ molecules

With the above information, we can determine the number of mole of H₂ that contains 4.8×10²⁶ molecules as follow:

6.02×10²³ molecules = 1 mole of H₂

Therefore,

4.8×10²⁶ molecules = 4.8×10²⁶ / 6.02×10²³

4.8×10²⁶ molecules = 797.34 moles

Thus, 797.34 moles of H₂ contains 4.8×10²⁶ molecules.

4 0
3 years ago
What is the number of neutrons in the element Nickel?
Lelu [443]

Answer:

Number of Protons, 28. Number of Neutrons, 31. Number of Electrons, 28

Explanation:

N/A

5 0
3 years ago
Read 2 more answers
Martije has made a slight error in naming a compound monocarbon tetrabromide. What compound is she most likely naming, and what
Burka [1]
The slight error has been to use the prefix mono to name monocarbon.

The compound she is most likely naming is:

 CBr_4.

As you see, the chemical formula has 1 atom of C, which is likely why she named it mono, and 4 atoms of Br.

The right name is carbon monobromide, i.e. you have to supress the prefix mono, as per IUPAC rules.


4 0
3 years ago
Read 2 more answers
How many atoms are in 1.4 mol of phosphorus trifluoride (PF3)?
joja [24]

Number of atoms in 1.4 mol of Phosphorus trifluoride (PF₃) : 8.428 x 10²³

<h3>Further explanation  </h3>

The mole is the number of particles(molecules, atoms, ions) contained in a substance  

1 mol = 6.02.10²³ particles

Can be formulated

N=n x No

N = number of particles

n = mol

No = Avogadro's = 6.02.10²³

1.4 mol of Phosphorus trifluoride (PF₃), number of atoms :

\tt N=1.4\times 6.02\times 10^{23}\\\\N=8.428\times 10^{23}

5 0
3 years ago
______ is a chemical property of matter.
Reika [66]
I think it’s chemical reactivity
4 0
3 years ago
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