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swat32
3 years ago
7

Outside wooden steps may get slippery when they are wet. How could you make them less slippery?

Chemistry
1 answer:
IceJOKER [234]3 years ago
7 0

Answer:

By adding a surface that increases friction? Such as outdoor mats(rough ones), which increases friction between the bottom of the boots and the surface.

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What is the mass of 1.75 moles of HF?
olganol [36]

Answer:

Mass = 35.02 g

Explanation:

Given data:

Number of moles = 1.75 mol

Mass of HF = ?

Solution:

Formula:

Mass = number of moles × molar mass

Molar mass of HF = 20.01 g/mol

by putting values,

Mass = 1.75 mol × 20.01 g/mol

Mass = 35.02 g

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3 years ago
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Dalton's law of partial pressures states that the total pressure exerted by a mixture of gases is the sum of the pressures exert
Damm [24]

Answer: The given statement is true.

Explanation:

According to the Dalton's law, total pressure of a mixture of gases that do not react with each other is equal to the partial pressure exerted by each gas.

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or,        p_{total} = p_{1} + p_{2} + p_{3} + p_{4} + ......... + p_{n}

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Also, relation between partial pressure and mole fraction is as follows.

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where,      x_{i} = mole fraction

Thus, we can conclude that the statement Dalton's law of partial pressures states that the total pressure exerted by a mixture of gases is the sum of the pressures exerted independently by each gas in the mixture, is true.              

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