Use the word chemistry in a sentence, make it unique and not something I've heard. ​

Explanation:

The issue of Pollution in our the oceans has changed the chemistry of water.

Pollution in our environment is actually changing the chemistry of large bodies of water?

since the atomic number is the number of protons in the nucleus, as we move to the left on the periodic table, the electrostatic pull between the nucleus and the valence electron shell decreases. as we move down a group (vertical column), the valence shell energy level gets further and further from the nucleus.

hey there!

mass = 6.75 g

volume =   9 cm³

therefore:

d = mass / volume

d   = 6.75 / 9

d = 0.7 g/cm³

answer b