Answer:
240g
Explanation:
Using the equation m=pV, where m=mass, p=density, and V=Volume
m=(6)(40)=240
m=240
The answers are:
- natural abundance: 60.108%
- atomic mass: 68.926 amu
The atomic mass of an element is the average of the atomic masses of its isotopes. The relative abundance of isotopes must be taken into consideration, therefore:
atomic mass of copper = atomic mass of isotope 1 * abundance 1 + atomic mass of isotope 2 * abundance 2
We know:
atomic mass of copper = 69.723 <span>amu
</span>The atomic mass of Ga-71 is: 70.925 amu
The abundance of Ga-69 is: 39.892% = 0.39892
The atomic mass of Ga-69 is: x
The abundance of Ga-69 is: 100% - 39.892% = 60.108% = 0.60108
Thus:
69.723 amu = 70.925 amu * 0.39892 + x * 0.60108
69.723 <span>amu = 28.293 amu + 0.60108x
</span>⇒ 69.723 amu - 28.293 amu = 0.60108x
⇒ 41.430 amu = 0.60108x
⇒ x = 41.430 amu ÷ 0.60108 = 68.926 amu
You would litterally be able to fry an egg on a sidewalk. The sun would SCORCH the Earth Killing everything, even humans.
A salt or ester of phosphoric acid, containing PO43− or a related anion or a group such as —OPO(OH)2.
