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olga nikolaevna [1]
3 years ago
14

Determine the number of electrons, neutrons and protons in an atom of arsenic -75.

Chemistry
1 answer:
qwelly [4]3 years ago
8 0
Protons-33
neutrons-42
electrons-33
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Calculate the mass fraction of sodium chloride in the solution if 20 g of it is dissolved in 300 ml of water.
MA_775_DIABLO [31]

The mass fraction of sodium chloride is 0.0625

<h3>What is the mass fraction of sodium chloride in the solution?</h3>

The mass fraction of sodium chloride is the ratio of the mass of sodium chloride to the total mass of the solution.

The mass fraction of sodium chloride is determined as follows;

mass of sodium chloride = 20 g

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mass of water = 300 mL * 1 g/mL

mass of water = 300 g

total mass of solution = 20 + 300 = 320 g

mass fraction of sodium chloride = 20/320

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The only compound that fits with the definition is RbOH, so this is our <u>base</u>.

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