The moles of nitrogen in 0.30 mole of caffeine is calculated as follows
write the chemical formula = C8H10N4O2
for this case from the chemical formula we have 4 atoms of nitrogen in caffeine
therefore moles of nitrogen in caffeine = 4 x0.30 =1.2 moles
The correct answer is D. Mixtures can be easily separated solutions cannot.
Carbon monoxide hope this helped!
Answer: It shows that the object is supposedly moving toward the observer
Explanation: A spectrum typically displays intensity and wavelength which characterises light.
this is the formula and answer of this question