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Arada [10]
3 years ago
12

160 g or an element with a molar mass of 40 = __ moles?

Chemistry
1 answer:
IRISSAK [1]3 years ago
4 0

Answer:

4 moles

Explanation:

The formula of finding moles is

moles = mass / molar mass, therefore

moles = 160 g / 40 g/mol = 4 moles

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The possible products of a double displacement reaction in aqueous solution are SrSO4 and NaCl. Which of these possible products
madam [21]

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7 0
3 years ago
Show, in a step by step fashion, your calculations to determine the percent
marusya05 [52]

The percent  by volume of a solution : 19.23%

<h3>Further explanation</h3>

Given

50 ml of ethanol

210  ml of water

Required

The percent  by volume of a solution

Solution

Percent Volume (% v/v) : volume (ml) of solute/100 ml of solution ⇒ ratio of the volume of the solute to total volume of the solution

\tt \%solute(v/v)=\dfrac{solute~volume}{solution~volume}\times 100\%

solute= Ethanol

solvent=water

Solution = solute+solvent

Total volume of the solution :

\tt =volume~of~Ethanol+solume~of~water\\\\=50~ml+210~ml\\\\=260~ml

Percent by volume :

\tt \%volume=\dfrac{50}{260}\times 100\%\\\\\%volume=19.23\%

8 0
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