I believe the answer is x
B. Decreasing surface area of a solid reactant. The more surface area showing, the quicker the reaction rate.
C. is the only double reaction here given that a double replacement reaction involves two compounds that exchange previous components, and C is the only solution with two compounds present
Force = 9x10^9 x (6x10^-7 x 6x 10^-7) / (.5)^2
= 0.013 N
Using the formula;
F = 9x10^9 x (Q1 x Q2) / r^2
Answer: 150 miles per hour
Explanation:
600/4 just do 600÷4 on a calculator and you will get 150 miles.
