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pogonyaev
4 years ago
15

Element X reacts with bromine to form an ionic compound that has the formula XCl2?

Chemistry
1 answer:
andreyandreev [35.5K]4 years ago
3 0

Explanation:

Bromine is a group 17 element and contains 7 valence electrons. And, in order to completely fill its octet it needs to gain just one electron. When it chemically combines with another substance and forms a compound with chemical formula as XCl_{2} then it means charge on substance X is +2.

For example, compound formed between magnesium and bromine is magnesium bromide and its chemical formula will be MgBr_{2}.

Any element of group 2 can react with bromine to form a compound with chemical formula XBr_{2}.

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Three moles of oxygen gas is stored in a 2.5-liter container at 35°C. What is the pressure of this gas?
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Answer:

The pressure of the gas is 30.3072 atm.

Explanation:

An ideal gas is characterized by three state variables: absolute pressure (P), volume (V), and absolute temperature (T). The relationship between them constitutes the ideal gas law, an equation that relates the three variables if the amount of substance, number of moles n, remains constant and where R is the molar constant of the gases:

P * V = n * R * T

In this case:

  • P= ?
  • V= 2.5 L
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Replacing:

P* 2.5 L= 3 moles* 0.082 \frac{atm*L}{mol*K} *308 K

Solving:

P=\frac{ 3 moles* 0.082 \frac{atm*L}{mol*K} *308 K}{2.5 L}

P= 30.3072 atm

<u><em>The pressure of the gas is 30.3072 atm.</em></u>

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