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3 years ago

Please Easy Chem Question 15 points...

Chemistry

1 answer:

HACTEHA [7]3 years ago

4 0

Answer:

Mass of NaOH required= 60 g

Explanation:

Given data:

Mass of NaHCO₃ = 126 g

Mass of NaOH required = ?

Solution:

Chemical equation:

NaOH + CO₂ → NaHCO₃

Number of moles of NaHCO₃:

Number of moles = mass/ molar mass

Number of moles = 126 g/ 84 g/mol

Number of moles = 1.5 mol

Now we will compare the moles of NaHCO₃ and NaOH.

NaHCO₃ : NaOH

1 : 1

1.5 : 1.5

Mass of sodium hydroxide:

Mass = number of moles × molar mass

Mass = 1.5 mol × 40 g/mol

Mass = 60 g

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Explanation:

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$T_b=118.75 ^oC$

118.75°C is the boiling point of a solution.

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wlad13 [49]

Answer:

a) P = 9.58 psi for h=7.2 m

b) P=4.7 psi for h=5.94 m

Explanation:

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