Answer:
false
Explanation:
Because in a periodic table they are not located below each other and therefore do not have the same number of electrons.
Answer: Dunes are formed through the interaction of mountains and wind. The wind picks up quartz grains from the mountains in the area to form the dunes and these are reshaped by the same process over time.
I would say the answer is D
Paint samples received by forensic laboratories are usually in the form of small chips or smears. Infrared (IR) spectroscopy is one of the most commonly used tools available for the analysis of these types of samples and serves as a staple comparative technique in the assessment of whether or not a questioned sample could have come from a suspected object
The most direct way to probe the vibrational frequencies of a molecule is through infrared spectroscopy. This is because vibrational transitions typically require an amount of energy that corresponds to the infrared region of the spectrum. Raman spectroscopy, which typically uses visible light, can also be used to directly measure vibration frequencies.
Answer:
Explanation:
1 mol of nitrogen at STP = 22.4 L = 22400 cc
n = Mol of 
= 
M = Molar mass of = 
= Avogadro's number = 
Mass of is
Mass of the nitrogen is
Number of molecules is given by
The number of molecules present in it are
