0.315 to scientific notation

What is the ima of the 1 st class lever in the graphic given? 2 3 0.5

Which of these expressions are correct variations of the combined gas law? p1v1t2 = p2v2t1 both

Choose an equation that represents an enzyme-catalyzed reaction. (a) enzyme + substrate → enzyme-substrate complex (b) enzyme + substrate ←−→ enzyme + products (c) enzyme + substrate ←−→ enzyme-substrate complex → enzyme + products (d) enzyme + substrate ←−→ enzyme-substrate complex → enzyme-substrate complex + products