How many Ca2+ ions are in a sample of CaSO4 having a total mass of 68.07 g? (Given: The molar mass of CaSO4 is 136. 14 g/mol; Avogadro's number is 6.022 x
1023 /mol)
O 6.022 x 1023 Ca2+
ions
3.011 x 1023 Ca2+ ions
3.011 x 1022 Ca2+ ions
4.516 x 1023 Ca2+ ions
O 1.024 x 1024
Ca2+
ions

There are  

17.01

Explanation:

The chemical formula for calcium phosphate is  

Ca

3

(PO

4

)

2

. This means that in one mole of calcium phosphate, there are three calcium ions and two phosphate ions.

Explanation:

Erosion is the movement of sediment from one place to another. Erosion is the mechanical process of wearing or grinding somethin down. It condition in which the earth’s surface is worn away by the action of water and wind.

Therefore, the final answer is Erosion.