Marissa noticed that when she dropped an antacid tablet into warm water, it produced more gas bubbles than when placed in cold water. She concluded that the reaction rate increased with the increased temperature of the water. Which of the following explains the increased rate of reaction in the warm water? The decreased potential energy in the cold water allows the molecules to move further apart, increasing the reaction rate.

The decreased kinetic energy in the cold water allows the molecules to move further apart, increasing the reaction rate.

The increased kinetic energy in the warm water allows the molecules to come together faster, increasing the reaction rate.

The increased potential energy in the warm water allows the molecules to come together faster, increasing the reaction rate.

4.08%

step-by-step explanation:

it is contrapositive

i could not see the question too well so check yourself again too . this is because i want you to get it correct.

{x = -1/2 ,   y = -1

step-by-step explanation:

solve the following system:

{2 x + y = -2

{10 x - 3 y = -2

in the first equation, look to solve for y:

{2 x + y = -2

{10 x - 3 y = -2

subtract 2 x from both sides:

{y = -2 x - 2

{10 x - 3 y = -2

substitute y = -2 x - 2 into the second equation:

{y = -2 x - 2

{10 x - 3 (-2 x - 2) = -2

10 x - 3 (-2 x - 2) = (6 x + 6) + 10 x = 16 x + 6:

{y = -2 x - 2

{16 x + 6 = -2

in the second equation, look to solve for x:

{y = -2 x - 2

{16 x + 6 = -2

subtract 6 from both sides:

{y = -2 x - 2

{16 x = -8

divide both sides by 16:

{y = -2 x - 2

{x = -1/2

substitute x = -1/2 into the first equation:

{y = -1

{x = -1/2

collect results in alphabetical order:

answer:   {x = -1/2 ,   y = -1