13.29 X 
moles of NaCl are in a pinch of salt and a pinch of salt has
approximately 3.29x formula units of NaCl.
<h3>What are moles?</h3>
The mole is the amount of substance of a system which contains as many elementary entities as there are atoms in 0.012 kilogram of carbon 12; its symbol is “mol”.
We know that 1 formula unit of sodium chloride has a molar mass of 58.44g/mol
Hence;
Mass of 1 formula unit = 58.44g
Mass of 3.29 x formula units
13.29 x x 58.44g
776.6676 x
Moles =
Moles = 13.29 X
Therefore;
13.29 X moles of NaCl are in a pinch of salt.
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Answer:
basically all but the....... second or fourth please dont report if wrong but i know most objects on the list can not be eletrically conducted im sorry oh and hi abbey!!!
The minus sign in ' –285.8 kJ/mol' indicates that the formation of water is an exothermic process. In an exothermic process heat is released by the system.
On the contrary, a positive value of the heat of formation indicates that the process is endothermic. In an endothermic process heat is absorbed by the system.
Using the ideal gas law, for a constant temperature, pV = constant (also known as Boyle's Law)
(1 atm)(175 L) = (5.2 atm)(V) = constant
V = 33.7 L
