The plural form of the noun alloy is alloys.
The plural possessive form is alloys'.
Example: We've tested all of these alloys' strength.
The plural form of the noun laboratory is laboratories.The plural possessive form is laboratories'.
The plural form of the noun synthesis is syntheses.The plural possessive form is syntheses'.
The plural possessive noun of molecules is molecules' .
Synthesis is the singular form, syntheses is the plural form, and syntheses' is the plural possessive form.
The possessive form of the plural noun chemists is chemists'.Example: The chemists' laboratories are in this building.
Alloys' is the plural possessive of alloy
The plural of alloy is alloys.
Coaster's is singular possessive. The plural is coasters, the plural possessive is coasters'.
The correct form is "its" for the possessive form in the plural. "Its" is used for both the singular and plural possessive forms, without an apostrophe.
The plural is briefs. The plural possessive is briefs'.
The plural is lads. The plural possessive is lads'.
The plural is trollies. The plural possessive is trollies'.
The plural is stations. The plural possessive is stations'.
The plural is relatives. The plural possessive is relatives'.
Museum is singular. Museum's is singular possessive. Museums is plural. Museums' is plural possessive.
The singular possessive form is heart's; the plural possessive form is hearts'.
The plural form is homes; the plural possessive is homes'.