What is the mass of 0.7891 mol of ferric oxide (fe2o3)?

The mass  of 0.7891 mol  of  ferric  oxide (Fe2O3)  is  125.94 grams

 calculation

mass of Fe2O3 is calculated using   moles   Fe2O3/ molar  mass of Fe2O3  formula

moles of Fe2O3  = 0.7891  moles

molar  mass  of Fe2O3=   (55.8 x2)  + (16 x3)  =159.6 g/mol

mass is therefore =0.7891 mol  x 159.6 g/mol=125.94 grams

explanation:

venn diagram is pictorial representation with of circles showing the relation between two finite sets or things. the intersection part of two circles conveys the relation present in between those sets or things.

here in the venn diagram of sand and salt two circles represent sand and salt. but the area falling under the intersection of these circle represents the mixture of sand and salt.

so, in a venn diagram the mixture will be placed in a middle that is in between the intersection of two circles.