Sulfur powder (S) and oxygen gas (O2) undergo a chemical reaction to form sulfur doixide(SO2). Which equation represents this chemical reaction? A. S= SO2 + O2.

B. S + O2 = SO2.

C. SO2 = S + O2.

D. O2 = SO2 + S

Select the correct answer. anna will wear a black dress when she attends het cousin's wedding. which color(s) does the dress absorb? a. all colors b. no colors c. red and green d. white

All the simple machines make work easier to do by changing the or of a force. a. size; type b. work; type c. size; direction d. type; direction

Students design a model roller-coaster track. they place a rubber ball at the highest point on the track and let it go. the ball rolls along the track pulled only by the force of gravity. eventually, it comes to a stop. which change to the design will result in the ball moving the greatest distance?