Which is a conversion factor for this statement of equality: 12 in. = 1 foot? 12 feet1 in. 12 feet 1 in . 1 in.12 feet 1 in . 12 feet 1 foot12 in. 1 foot 12 in . 1 foot1 in. 1 foot 1 in .

Balance this equation co2(g) + h2o (g) show that the balanced equation obeys the law if conversation of mass

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!

What is the percentage of hydrogen in c2h4