Which of the following is a balanced equation for this reaction? a. cr + h2so4? cr2(so4)3 + h2 b. cr + 3h2so4? cr2(so4)3 + h2 c. 2cr + 3h2so4? cr2(so4)3 + 3h2 d. 2cr + h2so4? cr2(so4)3 + h2

The earth is constantly spinning on its axis, like you might spin a basketball on your finger. it is this spinning of the earth that causes

Question 1 (5 pts): what is the maximum distance for which you can you resolve the two individual headlights of an on-coming truck as two separate lights rather than one if the headlights are separated by 2.00 m and your eye has a diameter of 1.00 centimeter? assume a wavelength of 500 nm.

Why does lightning travel from clouds to the ground?