False, different density of surroundings gives different speeds
Answer:
V = 15.6 L
Explanation:
Hello there!
In this case, according to the definition of molarity in terms of the moles of solute divided by the volume of the solution, it is possible for us to write:
Thus, given the moles and concentration of the solution, we can find the volume as shown below:
V=n/M
Therefore, we plug in the given data to obtain:
V = 2.5mol /(0.16mol/L)
V = 15.6 L
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Boron has 5 protons, 5 electrons and 6 neutrons for the most common isotope. This determines that it has a neutral charge.
The average atomic mass of the element = 35.5
calculation
average atomic mass = sum of the masses of its isotope each multiplied by its natural abundance.
that is
[(75 x35) +(25 x37)] /100 = 35.5