2 years ago

What are 1A, 3B, and 7A examples of on the periodic table?

2 answers:

6 0

Answer:

1A, 3B, and 7A are examples of group _ on the periodic table. ... Elements in group 2 are all called alkaline earth metals.

Explanation:

Hitman42 [59]2 years ago

3 0

Answer:

Groups

Explanation:

1 A, 3 B, and 7 A are examples of group number on the periodic table

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"what is the mole fraction of solute in a 3.87 m aqueous solution?"

sattari [20]

The mole fraction of solute in a 3.87 m aqueous solution is 0.0697

<h3> calculation</h3>

molality = moles of the solute/Kg of the solvent

3.87 m dissolve in 1 Kg of water= 1000g

find the moles of water= mass/molar mass

that is 1000 g/ 18 g/mol= 55.56 moles

mole of solute = 3.87 moles

mole fraction is = moles of solute/moles of solvent

that is 3.87/ 55.56 = 0.0697

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Explanation:

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