Usually polar molecules have lone pairs because of their asymmetrical distribution of charge.
you can determine a molecules polarity by using a chart showing elements different electronegativities and subtracting them
ex. NonPolar molecules have electronegativities from 0.0 to 0.2, I have polar molecules have electronegativities from 0.2-1.4.
Answer:
An educated guess based on what you already know.
Explanation:
Answer:
Explanation:
Since we have $N_A$ number of molecules in 22.4 L, in 15 L we have:
$\frac{15}{22.4}\times 6.023 \times 10^{23}$ molecules.
Answer:
9256.5 g/ml
Explanation:
Use the formula,
Density = mass/volume
;Where you need to calculate the volume change firstly,
Volume = 238.0 - 207.4
;Volume = 30.6 ml
; Hence for calculating density,
; Density = 302.5 × 30.6
; Density = 9256.5 g/ml
It could be a meteor that crashed from space?