Ellen is 2 years older than her brother luke. let k represent luke's age. identify the expression that can be used to find ellen's age.

a. k-2

b. k+2

c. 2k

d. k/2

Consider the reaction 2x2y2+z2⇌2x2y2z which has a rate law of rate= k[x2y2][z2] select a possible mechanism for the reaction.

Afamily of five rents a kayak and splits the total time, k, equally. each family member spent less than 25 minutes kayaking. which values can be used to complete the math sentence below so that it accurately represents the situation? intro done

Alex measured the length of an item to be 3.7 cm. the actual length is 3.5 cm. what is alex’s percent error?