Isabel wants to determine the mass of a metal block. what is the si unit for mass

Balance this equation co2(g) + h2o (g) show that the balanced equation obeys the law if conversation of mass

Diffraction is when light is bent around obstructions. which of the these observation about clouds would indicate diffraction? a) after rain storms, you can sometimes see rainbows. b) clouds are white or gray and cannot be seen through. c) on a cloudy day, the temperature tends to be cooler than a sunny day. d) the edges of dark clouds appear lighter. this

How is the way a mixture is combined different from how a compound is combined?