Webb is testing samples of different elements. One sample is a dull, yellow solid that breaks into powdery pieces when he hits it with a hammer. How should Webb classify
the yellow solid?
As a metal
As a nonmetal
As a gas
As a metalloid

Concerning the 10.0 ml of 0.50 m nacl to 100 ml of solution: when a solution is diluted, does it change the number of moles dissolved?

In this chemical reaction, 325 grams of barium (ba) react completely. how many moles of lithium (li) are produced?

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!