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3 years ago

Butane is also a molecular compound. what is its formula? how many atoms does it contain?

Chemistry

1 answer:

pishuonlain [190]3 years ago

5 0

The formula of butane is C4H10 but I don't how many atoms it contains though

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Write the chemical equation that represents the process of lattice energy for the case of nacl.

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Answer: $Na^+(g)+Cl^-(g)\rightarrow NaCl(s),\Delta H_{Lattice}=-786kJ/mol$

Explanation:

Lattice energy : It is defined energy released when ions combine together in a gaseous phase to form a compound. it is energy possessed by the crystal lattice of a compound. Denoted by symbol $\Delta H_{Lattice}$ .

$\Delta H_{Lattice}=positive$ , energy is absorbed while forming of the lattice

$\Delta H_{Lattice}=negative$ , energy is release while forming of the lattice

$Na^+(g)+Cl^-(g)\rightarrow NaCl(s),\Delta H_{Lattice}=-786kJ/mol$

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3 years ago

The heat of a reaction may be found with the equation q=mcΔT.

sweet-ann [11.9K]

Answer:

B) -1551 kJ

Explanation:

There are two heat flows in this question.

Heat released by engine + heat absorbed by water = 0

q₁ + q₂ = 0

q₁ + mCΔT = 0

Data:

m = 2.51 kg

C = 3.41 J°C⁻¹g⁻¹

T_i = 23.8 °C

T_f =205 °C

Calculations:

(a) ΔT

ΔT = 205 °C - 23.8 °C = 181.2 °C

(b) q₂

q₂ = mCΔT = 2510 g × 3.41 J·°C⁻¹g⁻¹ × 181.2 °C = 1.551× 10⁶ J = 1551 kJ

(c) q₁

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q₁ = -1551 kJ

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3 years ago

What is the hybridization of the carbon in the HCN molecule?

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Answer: sp hybridization

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