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3 years ago

The beaker shown below contains a 0.58 M solution of dye in water. How many moles of dye are there in the beaker?

2 answers:

7 0

According to the equation of molarity:

Molarity= no.of moles / volume per liter of Solution

when we have the molarity=0.58 M and the beaker at 150mL so V (per liter) = 150mL/1000 = 0.150 L

by substitution:
∴ No.of moles = Molarity * Volume of solution (per liter)
= 0.58 * 0.150 = 0.087 Moles

Sergio039 [100]3 years ago

4 0

Molarity is the number of moles that are contained in 1000 cm³ or a liter of water.
In this case the molarity is 0.58 M meaning 0.58 moles of the dye are contained in 1000 cm³ or a liter of water.
The beaker is at 150 cm³, there the number of moles will be;
=0.58 × 150/1000
= 0.087 moles

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The quantum number $n$ (the principal quantum number) specifies the main energy shell of an electron. This electron is in the fourth main energy shell (as seen in the number four in the orbital.) Hence, $n = 4$ for this electron.

The quantum number $l$ (the angular momentum quantum number) specifies the shape ( $s$ , $p$ , $d$ , etc.) of an electron. $l = 1$ for $s\!$ orbitals (such as the one that contains this electron.

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﻿The beaker shown below contains a 0.58 M solution of dye in water. How many moles of dye are there in the beaker?

The beaker shown below contains a 0.58 M solution of dye in water. How many moles of dye are there in the beaker?