The reaction of hydrogen with nitrogen to produce ammonia is shown below. If there are 6 moles of nitrogen, how many moles of hydrogen are needed to
react completely with the nitrogen?
N2(g) + 3H2(9) ► 2NH3(9)
A. 3
B. 6
C. 2.
D. 18

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

Which statements are true concerning mineral formation? check all that apply. the slower the cooling, the larger the crystals. the faster the cooling, the smaller the crystals. crystals formed from magma are smaller than crystals formed from lava. minerals can only form in solutions when the solution is heated deep underground. when a solution cools, elements and compounds leave the solution and crystallize as minerals. minerals formed from hot water solutions can form narrow channels in the surrounding rock.

Why is retrograde motion an apparent motion