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3 years ago

14

An experiment requires 40.0g of ethylene glycol, a liquid whose density is 1.114 g/mL. Rather than weigh the sample on a balance

, a chemist chooses to dispense the liquid using a graduated cylinder. What volume of the liquid should he use?

1 answer:

uranmaximum [27]3 years ago

6 0

Density= mass/volume
volume=mass/density
volume= 40.0g/1.114g per mL
volume= 35.90664273 mL
volume = 35.9 mL

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<u>Answer:</u>

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<u>For b:</u> The isotopic representation of cesium is $_{55}^{137}\textrm{Cs}$

<u>For c:</u> The isotopic representation of strontium is $_{38}^{52}\textrm{Sr}$

<u>Explanation:</u>

The isotopic representation of an atom is: $_Z^A\textrm{X}$

where,

Z = Atomic number of the atom

A = Mass number of the atom

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<u>For a:</u>

We are given:

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Mass number = 53 + 78 = 131

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<u>For b:</u>

We are given:

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