Respuesta :
The number of moles the sample of sodium hydroxide (NaOH) will contain is 4 moles.
How we calculate moles?
Moles of any substance will be calculated by using the below formula:
n = W/M, where
W = given mass
M = molar mass
Given mass of NaOH = 160 g
Given molar mass of NaOH = 40 g/mole
On putting these values on the above equation, we get
n = 160 / 40 = 4 moles
Hence, required moles is 4 moles.
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