Explanation:
The reactants are Aluminium and Copper chloride.
The products are Copper and Aluminium chloride.
Answer:
c. Forms different hydrates which have different colors
Explanation:
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.
Pentane is the correct answer the prefix pent means 5 so 5 hydrogens