Which of the following is a diatomic molecule?
a. ca2-
b. n2
c. kcl
d. mgcl2

(1.6 × 10-19)(5.0 × 106) = c × 10d identify the missing numbers below to show the result of multiplying the numbers.

While in europe, if you drive 125 km per day, how much money would you spend on gas in one week if gas costs 1.10 euros per liter and your car’s gas mileage is 32.0 mi/gal? assume that 1 euro=1.26 dollars

Who examines and coordinates the cleanup of polluted sites?