How many moles are contained in 23.5 g of sb2s3?

Litmus paper is made from water-soluble dyes which are extracted from lichens. this paper is used as an acid-base indicator. which of these common household substances would turn blue litmus paper red? a) bleach b) lye c) soap d) vinegar

What is the formula that this ionic compounds could form sr2+p3-o2-

The grooves or folds of the brain are called