The table below which presents two physical properties of four substances at room temperature (25°C). Which substance(s) will have fast moving particles?
Substance
P
Q
R
S
Melting Point
(°C)
-285
800
190
-20
Boiling Point
(°C)
–183
1400
180
350
P only
R only
P and S only
Q and R only​

What method(s) do plants use to obtain nitrogen? select all that apply. absorb it from the atmosphere use bacteria to convert nitrogen to usable form obtain usable nitrogen compounds from the soil absorb nitrogen from water taken in at the roots

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

Astudent reacts 13 moles of iron with 21 moles of oxygen according to the following equation: