The first step of the scientific method would be Observations.
The mass of ONE mole is the same thing as the atomic mass, so the mass of one mole of Al is 26.99
Answer:- C. Hafnium.
Solution:- Mass of the sample is 46.0 g and it's volume is .
From mass and volume, we can calculate it's density using the formula:
On the basis of the density, this substance could either be mercury or hafnium. Since the substance is a solid at room temperature where as mercury is liquid. So, it can't be mercury.
The right choice is C) Hafnium.
The net ionic equation for the reaction that occurs when small amount of HCl are added to HoCl/ NaOcl Buffer solution is written as follows
H+ + OCl - -----> HOcl
The answer would be 32.4m