Amount of substance is measured in terms of mole. The mass of substance via same number of basic systems as atoms in 12 g of carbon 12 is 1 mole.

You are watching: How many moles of k2so4 are in 15.0 g of k2so4

In action 1, we have to calculate the molar mass of

*
. The molar mass of
*
can be calculated by using equation (1).

Step 1: The molar mass of

*
is calculated as follows:

*
" alt=" extMolar mass ofmathbf extK_ ext2 extS extO_ ext4 = left< egingathered ext2left( extAtomic mass of K ight)+hfill\ ext1left( extAtomic mass of S ight)+hfill\ ext4left( extAtomic mass of O ight)hfill\endgathered ight>" align="absmiddle" class="latex-formula">

…… (1)

The atomic mass of K is 39.09 g.

The atomic mass of S is 32.06 g.

The atomic mass of O is 16 g.

Substitute these values in equation (1).

*
\&=left< ext78 ext.18 g+ ext32 ext.06 g+ ext64 g ight>\&=174.24; extg/mol\endgathered" alt="eginaligned extMolar mass ofmathbf extK_ ext2 extS extO_ ext4&=left< ext2left( ext39 ext.09 g ight)+ ext1left( ext32 ext.06 g ight)+ ext4left( ext16 g ight) ight>\&=left< ext78 ext.18 g+ ext32 ext.06 g+ ext64 g ight>\&=174.24; extg/mol\endgathered" align="absmiddle" class="latex-formula">

In step 2, the molar mass calculated in step 1 is provided to calculate the number of moles of

*
. The variety of moles of
*
is calculated by utilizing equation (2).

Step 2: The formula to calculate the moles of

*
is as follows:

*

…… (2)

The given mass of

*
is 15 g.

The molar mass of

*
is 174.24 g/mol.

Substitute these worths in equation (2).

*

Learn more:

1. Calculate the moles of ions in the solution: brainly.com/question/5950133

2.

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chathamtownfc.net details:

Grade: Senior School

Subject: Chemistry

Chapter: Mole concept

Keywords: molar mass, mole, K2SO4, 0.0860 mol, provided mass, atomic mass, K, S, O, 16 g, 32.06 g, 39.09 g, 15 g, 174.24 g/mol.