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kolezko [41]
3 years ago
5

When 15.6 g of fluorite (caf2) reacts with excess sulfuric acid, hydrogen fluoride gas is collected at 709 torr and 25.5°c. sol

id calcium sulfate is the other product. what gas temperature is required to store the gas in an 7.40âl container at 899 torr?
Chemistry
1 answer:
lianna [129]3 years ago
5 0
The reaction equation is:

CaF₂ + H₂SO₄ → 2HF + CaSO₄

The molar ratio between fluorite and hydrogen fluoride is 1 : 1.

The moles of fluorite supplied are:

Moles = 15.6 / 78.07
Moles = 0.200

The moles of hydrogen fluoride produced will be 0.2.

Now, we may use the ideal gas equation to determine the temperature:

PV = nRT
T = PV/nR

T = (899 * 7.4) / (0.2 * 62.36)

T = 533.40 K

The temperature will be 260.25 °C
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Answer:

All the members of a group of elements have the same number of valence electrons and similar chemical properties.

Explanation:

The vertical columns on the periodic table are called groups or families because of their similar chemical behavior.

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3 years ago
What intermolecular force(s) is/are present in solid SO3?
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Answer:

1. London dispersion

Explanation:

Sulphur trioxide ( SO₃ ) -

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Hydrogen bonding is also not observed , because there is not hydrogen atom .

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Alenkinab [10]

Answer:

20.0928.

Explanation:

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6 0
2 years ago
What is the daughter nuclide when 0-15 experiences positron emission?
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The daughter isotope (a decay product)of O-15 = N-15(Nitrogen 15)

<h3>Further explanation </h3>

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O-15 emits positron particles ₁e⁰, so the atomic number decreases by 1, the mass number is the same

Reaction

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The mass number of the daughter isotope = 15, atomic number = 7

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