Scientists are able to understand Earth's interior by studying seismic waves. These are waves of energy that travel through Earth, and they move similarly to other types of waves, like sound waves, light waves, and water waves.
MgCl2
Charges are not included in chemical formulas- they are implied
The reactivity depends on the elements valence electrons. The need to be stable will make an element become more reactive, In order for an atom to be stable, it needs 8 valence electrons in its outer shell.
Since Calcium is in group 2, it has 2 valence electrons, and would rather give up the electrons. While Sulfur has 6, it would need to gain 2 more to be stable, making it more reactive.
Answer: these are the values of density that complete the table
Sample density
A 1024
B 1027
C 1026
D 1025
E 1028
Procedure: take the values of temperature and salinity for each sample given in the table, and enter the graph to read the corresponding density value.
1) Sample A: temp = 21°C, salinity = 34%
Locate the value 34 on the horizontal axis (salinity axis), move vertically upward until reaching the level of 21 for the vertical axis, read the value of the density on the curve that passes through the point (34, 21). That value is
density = 1024 g/cm^3.
That is the value to copy on the table.
2) Sample B: temp = 11°C, salinity =35 %
Locate the value 35 on the horizontal axis (salinity axis), move
vertically upward until reaching the level of 11 for the vertical axis,
read the value of the density on the curve that passes through the point
(35, 11). That value is
density = 1027 g/cm^3.
That is the value to copy on the table.
3) Sample C: temp = 12°C, salinity = 34%
Locate the value 34 on the horizontal axis (salinity axis), move
vertically upward until reaching the level of 12 for the vertical axis,
read the value of the density on the curve that passes through the point
(34, 12). That value is
density = 1026 g/cm^3.
That is the value to copy on the table.
4) Sample D: temp = 19°C, salinity = 35%
Locate the value 35 on the horizontal axis (salinity axis), move
vertically upward until reaching the level of 19 for the vertical axis,
read the value of the density on the curve that passes through the point
(35, 19). That value is
density = 1025 g/cm^3.
That is the value to copy on the table.
5) Sample E: temp = 3°C, salinity = 35%
Locate the value 35 on the horizontal axis (salinity axis), move
vertically upward until reaching the level of 3 for the vertical axis,
read the value of the density on the curve that passes through the point
(35, 3). That value is
density = 1028 g/cm^3.
That is the value to copy on the table.
Carbon is a solid at room temperature.