Consider 1g of each of the following substances at S.T.P. which occupies thegreatest volume?(H = 1, F=19, S=32, O=16, Ne=20)A. FluorineB. Hydrogen sulphideC. OxygenD. Neon

To determine which substance occupies the greatest volume at STP, we need to compare the molar masses of each substance.

A. Fluorine (F) has a molar mass of 19 g/mol. B. Hydrogen sulphide (H2S) has a molar mass of 34 g/mol (2 g/mol for hydrogen and 32 g/mol for sulfur). C. Oxygen (O2) has a molar mass of 32 g/mol (16 g/mol for each oxygen atom). D. Neon (Ne) has a molar mass of 20 g/mol.

Since we are considering 1g of each substance, we can compare the number of moles of each substance by dividing the mass of each substance by its molar mass.

A. Moles of fluorine = 1g / 19 g/mol = 0.0526 mol B. Moles of hydrogen sulphide = 1g / 34 g/mol = 0.0294 mol C. Moles of oxygen = 1g / 32 g/mol = 0.0313 mol D. Moles of neon = 1g / 20 g/mol = 0.05 mol

Now, to determine which substance occupies the greatest volume, we need to compare the number of moles. The substance with the greatest number of moles will occupy the greatest volume.

Comparing the moles of each substance, we find that neon (D) has the greatest number of moles (0.05 mol). Therefore, neon occupies the greatest volume among the given substances at STP.