Mg +  __HCl  → MgCl2 + H2

What coefficient is needed to balance the equation?

Why is recycling a way of reducing pollution

You run to your girlfriends house announce that you were running a rate of 50 mph. She knows this is not true because she knows

What makes it possible for us to see the moon from earth? A. Light from earth shines on the moon's surface, making it bright. B. The moon absorbs light during the day and reflects that same light back at night. C.

How are mass, weight, density and gravity related?

Spring tides are the lowest tides of the year. True False

To remove 700 j of heat from a refrigerator, the compressor in the refrigerator does 500 j of work. How much heat is released into the surrounding room

The elements least likely to form bonds are found in group__ a) 15 b) 16 c) 17 d) 18

F a metal ball suspended by a rod is at rest, which force is responsible for balancing the force due to gravity?

If the mass of a material is 48 grams and the volume of the material is 8 cm^3, what would the density of the material be?

Your family is moving to a new house. While lifting the box 1.5 m straight up you exerted a force of 200 N for 1 second. How much work is required?