Which values are areas of cross sections that are parallel to a face of this right rectangular prism? with the numbers of 20,6,4

A.480 square units
B.120 square units
C.80 square units
D.24 square units

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

What is a possible quantum number set for an electron in the 3s orbital of a magnesium atom

8. how much enthalpy/heat is transferred when 0.5113gof ammonia (nh3) reacts with excess oxygen according| to the following equation: 4nh3 +502 - 4n0+ 6h20ah = -905.4j