What mass is Thallium (I) sulfide will be formed from 36.00g of thallium reacting with excess sulfur

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

You have a liquid that exhibits diltancy. you want to pour it from a bottle. what should you do to the bottle before pouring

Which of the following units is not an official si unit