I'm not sure if the answer is a or someone
which of the following equations has correct formulas and also is a balanced equation?
a.
mg + o2 --> mgo2
b.
2be + o2 --> 2beo
c.
caco3 --> cao + co3
d.
3kcl + hno3 --> 3hcl + kno3

A1200 kg car traveling north at 10 m/s is rear-ended by a 2000 kg truck traveling at 30 m/s. what is the total momentum before and after the collision?

Which configuration would produce an electric current? a) rotate a coil of copper wire between two magnets. b) connect a wire between a copper and zinc strip sitting in a beaker of water. c) connect a wire to the (+) positive end of a battery and the other end to a light bulb. d) connect a wire to the negative end of a battery and the other end to a light bulb.

While you are driving in the lane next to the curb on a multi-lane road the car on your left suddenly moves toward you lane. they are about toy crash into your front fender. you