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timama [110]
2 years ago
9

Calculate the mass of 4 moles of sodium hydroxide

Chemistry
1 answer:
harina [27]2 years ago
4 0

Answer:

Mass = 160 g

Explanation:

Given data:

Number of moles of sodium hydroxide = 4 mol

Mass of sodium hydroxide = ?

Solution:

Formula:

Mass = number of moles × molar mass of sodium hydroxide

Molar mass of sodium hydroxide = 40 g/mol

Mass = 4 mol × 40 g/mol

Mass = 160 g

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The order of melting points of the solids shown in question is as follows;

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Sodium chloride has the highest melting points because it is an ionic substance. Among the molecular sucrose and paraffin, sucrose has a higher melting point than sucrose because it has a greater molar mass. Iodine, a molecular substance has the least molar mass and the least melting point in the list.

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2 years ago
How might you think it is possible to convert from moles to particles or grams to particles?
nevsk [136]

Explanation:

To convert moles to particles or grams to particles, let us have a firm understanding of what a mole is.

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    1 mole of a substance  contains 6.02 x 10²³ particles

To convert from grams to particles;

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  So,    1 mole of a substance  contains 6.02 x 10²³ particles

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