3. (02.06 MC) The table compares some characteristics of two atoms.
Charged Particles
Atom Number of Neutrons Mass Number
X
10
19
Y
8
16
Use the table to determine the number of protons for each atom. Then, choose the statement below that is true about
the two atoms. (5 points)
Atom X and Atom Y are isotopes.
Atom X and Atom Y are in the same family.
Atom X is in a row below Atom y on the periodic table.
O Atom X is in a column to the right of Atom y on the periodic table.

C

Explanation:

D: Atom X is in a column to the right of Atom y on the periodic table.

Explanation:

when [oh-] is 10-5  m, and [h3o+] is 10-9  m, the poh is 5 and ph is 9. again in both cases the sum of ph and poh is 14. however, the hydrogen ion concentration is not always going to be equal to exactly 1 x 10 raised to a negative number. for example, we skipped over the value of 2.0 x 10-7.

in cartography, a contour line (often just called a "contour") joins points of equal elevation (height) above a given level, such as mean sea level. a contour map is a map illustrated with contour lines, for example a topographic map, which thus shows valleys and hills, and the steepness or gentleness of slopes.

explanation: