Which is a pure substance helium in a balloon

10. translate each of the following chemical equations into a sentence. a. 2 zns(s) + 3 o2(g) -> 2 zno(s) + 2 so2(g) b. cah2(s) + 2 h2o(l) -> ca(oh)2 (aq) + 2 h2(g)

Explain that newton first law,second law and third law of motion?

What energy is it when you flip on a switch on a lamp