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Mashcka [7]
3 years ago
5

Which allotrope of carbon is used in lubricants, sporting goods, and aircraft?

Chemistry
1 answer:
Morgarella [4.7K]3 years ago
4 0

The allotrope of carbon that is used in lubricants, sporting goods, and aircraft is graphite. The answer is letter A. Graphite is a good conductor of heat and is very soft. The layers of lattice of each are bound to the adjacent layers by weak Van der Waals forces which allow the layers to slide over one another easily.

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Answer:

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Explanation:

Step 1: Calculate the moles in 2.0 L of oxygen at STP

At STP, 1 mole of an ideal gas occupies 22.4 L.

2.0 L × 1 mol/22.4 L = 0.089 mol

Step 2: Calculate the moles in 8.0 L of nitrogen at STP

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8.0 L × 1 mol/22.4 L = 0.36 mol

Step 3: Calculate the total number of moles of the mixture

n = 0.089 mol + 0.36 mol = 0.45 mol

Step 4: Calculate the pressure exerted by the mixture

We will use the ideal gas equation.

P × V = n × R × T

P = n × R × T / V

P = 0.45 mol × (0.0821 atm.L/mol.K) × 298 K / 2.0 L = 5.5 atm

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