What is the covalent compond using prefixes for p4s5

In the reaction between a crushed antacid tablet and vinegar what gas is emitted

There is one girl i like and i don't know how to tell her that, i have a feeling she knows but if she doesn't i don't want to make a fool out of myself how is one way to boost my confidence on asking her out

I’m an electrically neutral atomic any element, there are equal numbers of