Suppose the formation of nitrogen dioxide proceeds by the following mechanism

step elementary reaction rate constant
1 2NO(g) → N2O2(g) k1
2 NO2 (g) + O2 (g) → 2NO2 (g) k2

Suppose also k1<
Write the balanced chemical equation for the overall chemical reaction:
Write the experimentally- observable rate law for the overall chemical reaction rate:

In the following table, all the columns for the element calcium are filled out correctly. element electron structure of atom electron structure of ion net ionic charge calcium 1s22s22p63s23p64s2 1s32s22p63s23p64s1 +1 true false

Why is it that 85.48 rounded to two significant figures is 85 and not 86?

Bridget is in science class. her teacher gives her two unknown substances and asks her to determine their relative ph. she places a piece of red litmus paper into both substances. the litmus paper turns purple when she places it into substance i. the litmus paper turns blue when she places it into substance ii. a. substance i is a neutral substance and substance ii is an acid. b. substance i is a neutral substance and substance ii is a base. c. substance i is an acid and substance ii is a base. d. substance i is a base and substance ii is a neutral substance.