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zheka24 [161]
3 years ago
8

Value of an extensive property

Chemistry
1 answer:
FinnZ [79.3K]3 years ago
6 0

Answer:

The value of an intensive property may vary with time and its position within the system. Examples of intensive properties include temperature, velocity, mass density, specific volume, and specific energy. An extensive property does not have a value at a point, and its value depends on the extent or size of the system.

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Atoms whose atomic number are the same but whose mass numbers are different are called: alpha particles ions beta particles isot
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<h2>Atoms whose atomic number are the same but whose mass numbers are different are called : Isotopes </h2>

Explanation:

Isotopes

They are the   elements with same atomic number but different mass number .

for example : Protium , deuterium and tritium are isotopes of hydrogen .

                    : C-14 and C-12 are isotopes of oxygen .

                     : Cl-35.5 and Cl-37 are isotopes of chlorine

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They are helium nuclei with +2 unit charge and 4 a.m.u mass

They are represented as : He₂⁴.

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8 0
3 years ago
Answer with explanation and you’ll get brain list
Gwar [14]

Answer:

Option D.

Explanation:

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First we convert the given reactant masses into moles, using their respective molar masses:

  • 4.00 g H₂ ÷ 2 g/mol = 2 mol H₂
  • 6.20 g P₄ ÷ 124 g/mol = 0.05 mol P₄

0.05 moles of P₄ would react completely with (6*0.05) 0.3 moles of H₂. There are more H₂ moles than required, meaning H₂ is in excess and P₄ is the limiting reactant.

Now we<u> calculate how many PH₃ moles could be formed</u>, using the <em>number of moles of the limiting reactant</em>:

  • 0.05 mol P₄ * \frac{4molPH_3}{1molP_4} = 0.2 mol PH₃

Finally we <u>convert 0.2 mol PH₃ into grams</u>, using its <em>molar mass</em>:

  • 0.2 mol PH₃ * 34 g/mol = 6.8 g

So the correct answer is option D.

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On what principle does calorimeter depend?
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