1.40. Aluminum metal reacts with bromine, a red-brown liquid with a noxious odor. The reaction is vigorous and produces aluminum bromide, a white
crystalline substance. A sample of 27.0 g of aluminum yields 266.7 g of
aluminum bromide. How many grams of bromine react with 18.1 g of
aluminum?

Asap! how do you lengthen a pattern piece? (family and consumer science, sewing)

What type of matter is made of only one kind of atom

I'm learning about the periodic tables and what each subject's configuration is. for example, hydrogen is 1s^1, but i don't understand how you get that. can someone me understand how to figure out how to figure this out? sorry if the question makes no sense, but it would really a lot if you could me understand! you so much if you can!