For which of the following reactions is δh∘rxn equal to δh∘f of the product(s)? you do not need to look up any values to answer this question. check all that apply. so3(g)→12o2(g)+so2(g) li(s)+12cl2(l)→licl(s) so(g)+12o2(g)→so2(g) 2li(s)+cl2(g)→2licl(s) s(s)+o2(g)→so2(g) li(s)+12cl2(g)→licl(s)

I’m guessing you’re more alert to yourself or your surroundings if you’re more concentrated

Higher temperature = molecules move around faster. and vice versa.

Radon-222 or rn-222 has a half-life of 3.82 days. to determine the fraction of an original sample of rn-222 that remains unchanged after 7.646 days, we calculate the amount of rn-222 remaining after 7.646 days and divide it with the original amount. using 1 gram as a basis and using half-life calculation methods, we can determine that  0.249 or 0.25  grams of rn-222 will remain, and thus the fraction remaining is 0.25 or 1/4.