Separation will be achieved if one component adheres to the stationary phase more than the other component does.
It's a double replacement reaction, so
3 Ca(OH)2 + 2 H3PO4 --> Ca3(PO4)2 + 6 H2O
Ca3(PO4)2
The correct answer is - 1 cm/yr.
Alongside the western coast of South America, the Nazca plate and the South American plate are in a collision for several million years now, with the Nazca plate being the one that is subducting in this convergent plate boundary.
If the Nazca plate's focus has moved 1,000 km in the last 10 million years, than in order to get to the annual movement of the subduction we need to convert the km into cm first:
1 km = 10,000 cm
1,000 x 10,000 = 10,000,000
1,000 km = 10,000,000 cm
Than we need to divide the number of cm with the number of years:
10,000,000 / 10,000,000 = 1
And we get the result of 1 cm/yr.
Answer:
C₆H₆O
Explanation:
The given values are the percentage in mass of each element. Empirical formula is the simplest ratio of atoms presents in a molecule. Thus, the first we need to do is convert this percentage to mass using molar mass of each element:
<em>Moles C:</em>
76.57C * (1mol / 12g) = 6.38 moles C
<em>Moles H:</em>
6.43 * (1mol / 1g) = 6.43 moles H
<em>Moles O:</em>
17.0% * (1mol / 16g) = 1.06 moles O
Dividing each number of moles in the moles of O (The minimum number of moles. Used to obtain "The simplest ratio..."):
C = 6.38 moles C / 1.06 moles O = 6
H = 6.43 moles H / 1.06 moles O = 6
O = 1.06 moles O / 1.06 moles O = 1
That means empirical formula of phenol is:
<h3>C₆H₆O</h3>
