Explanation:
(a) As per the mole concept, one mole of any atom contains 
atoms or molecules, that is, Avogadro's number of atoms.
Therefore, 1 mole of 
= 
molecules
= 
molecules
1 mole of 
= molecules
= molecules
1 mole of 
= molecules
= molecules
Hence, there are equal number of molecules present in the given atoms.
(b) Mass of each given atom will be calculated as follows.
Mass = no. of moles × molar mass
As one molecule of contains 2 atoms of hydrogen.
So, mass of 1 mole of = 
= 2.016 g
mass of 1 mole of = 
= 31.996 g
mass of 1 mole of = 
= 37.996 g
Thus, we can conclude that has the greatest mass.
The Equation is CaH2(s)+2H2O(l)-->Ca(OH)2(aq)+2H2(g)
so,
moles of H2 generated = PV / RT
R = 62.363 L Torr K−1 mol−1
number of moles = 814 * 53.5 / 62.363 * 293
= 2.38 moles
looking at the equation these came from 2.38 /2 moles of CaH2 or 1.19 moles
Molar mass of CaH2 is 42.0943 g/mol
so mass of CaH2 = 1.19 X 42.1 = 50.01g
potassium reacts the most vigorously.
Answer:
Image result for What evidence in Side View lets you know that upwelling is happening in these locations?
Winds blowing across the ocean surface often push water away from an area. When this occurs, water rises up from beneath the surface to replace the diverging surface water. This process is known as upwelling.
Explanation:
