Answer: B
. particle size
Explanation:
Let's begin by explaining that a molecular sieve is a device, whose composition allows the absorbtion of molecules that are small enough to pass through its pores, since it is made up of small pores of a precise and uniform size.
Thus, very small molecules manage to pass through the pores of the sieve, while large ones do not.
So, based on this premise, a molecular sieve separates the substances by their size.
Hence, the correct option is B.
Stored-product forensic entomology
Urban forensic entomology
Medicolegal forensic entomology
4 moles of nitrogen monoxide gas used to form 72.0 grams of water vapor.
<h3>What is a mole ?</h3>
A mole is the measurement unit which is used to correlate the molar mass with number of molecules present.
The equation for reaction of Nitrogen monoxide to form water vapor is given by
4NH₃ + 6NO ----> 5N₂ + 6H₂O
72 grams of water vapor means = 72/18 = 4 mole of water vapour
The mole fraction of NO to H₂O is 6 : 6
Therefore for 4 moles of water vapor formation , 4 moles of nitrogen monoxide will be required.
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Answer: Block # 1 , Block # 4 and
Block # 5 will sink.
Block # 2 and 3 will float.
Explanation: The density of water is equal to 1 g/mL. Any density that is less than the density of water will float. Objects with higher density compared to water will eventually sink.
