if the atomic mass of sodium is 23u the no. of moles in 46g of sodium is:
It’s 2
To find the number of moles in a given mass of a substance, you can use the formula:
Number of moles = Given mass / Atomic mass
In this case, we are given the atomic mass of sodium as 23u (atomic mass unit) and the mass of sodium as 46g.
Let's substitute these values into the formula:
Number of moles = 46g / 23u
Now, we need to determine the number of moles by dividing the given mass by the atomic mass of sodium:
Number of moles = 46g / 23u = 2 moles (rounded to the nearest whole number)
Therefore, there would be approximately 2 moles of sodium in 46g of sodium.