Explain the rate laws in chemistry and give me some examples...

Rate law is defined as the law which is used for studying the relationship between the rate of reaction and the concentration of the reactants.

OR

A rate law relates the concentration of the reactants to the reaction rate in a mathematical expression.

For example => the rate law Rate=k[NO]2[O2] Rate = k [ NO ] 2 [ O 2 ]

Explanation:

linda: 3 ; laura: 15

step-by-step explanation:

note that linda + laura's age is 18, and that linda is 12 years younger than her sister.

let "linda" = x , "laura" = y:

x + y = 18

x = y - 12

first, plug in y - 12 for x in the first equation:

(y - 12) + y = 18

simplify.

2y - 12 = 18

isolate the variable (y). note the equal sign, what you do to one side, you do to the other. do the opposite of pemdas. first add, then divide.

2y - 12 (+12) = 18 (+12)

2y = 18 + 12

2y = 30

(2y)/2 = (30)/2

y = 30/2

y = 15

next, plug in 15 for y in the second equation (the other equation would work too).

x = y - 12

x = (15) - 12

x = 3

linda's age is 3, laura's age is 15.

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what are the óptions. pléase list them