Which of the following is true of nonaneC9H20 which has a density of 0.79 g per milliliter melts at -51° Celsius and boils at 157° c? solid at room temperature
does not undergo combustion
floats on the surface of water
soluble in water
gas at room temperature​

Use the periodic table to determine the electron configuration of dysprosium (dy) and americium (am) in noble-gas notation.

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 mass of natural gas (ch4) must you burn to emit 276 kj of heat?