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2 years ago

Identify the reaction type for each generic chemical equation

Chemistry

2 answers:

vodomira [7]2 years ago

7 0

A + B → AB:

AB → A + B:

Hydrocarbon + O2 → CO2 + H2O:

AB + CD → AD + CB:

Dimas [21]2 years ago

5 0

A + B → AB: ✔ synthesis

AB → A + B: ✔ decomposition

Hydrocarbon + O2 → CO2 + H2O: ✔ combustion

AB + CD → AD + CB: ✔ replacement

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Answer:

The density of O₂ gas is 1.71 $\frac{g}{L}$

Explanation:

Density is a quantity that allows you to measure the amount of mass in a given volume of a substance. So density is defined as the quotient between the mass of a body and the volume it occupies:

$density=\frac{mass}{volume}$

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So:

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Knowing that 1 mol of O has 16 g, the molar mass of O₂ gas is 32 $\frac{g}{mol}$ .

Then:

$\frac{mass}{V} =\frac{P*molar mass of O_{2} }{R*T}$

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P=1.27 atm
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R= 0.0821 $\frac{atm*L}{mol*K}$

T= 16 °C= 289 °K (0°C= 273°K)

Replacing:

$density=\frac{mass}{V} =\frac{1.27atm*32\frac{g}{mol} }{0.0821\frac{atm*L}{mol*K} *289 K}$

Solving:

density= 1.71 $\frac{g}{L}$

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