Percent composition tells you which types of atoms (elements) are present in a molecule and their levels. Percent composition can also tell you about the different elements present in an ionic compound as well.

8 0

2 years ago

The ion with 36 electrons, 34 protons, and 44 neutrons

Reil [10]

While the number nuclear protons as given is 34, and therefore we deal with the element selenium, there are 2 more electrons than protons, and therefore this species has an overall
2
−
charge.
We represent this selenide ion as
S
e
2
−
. Do I win 5 pounds?

Z= 34, therefore the atom is selenium

7 0

3 years ago

Draw an ecosystem with 10 biotic and 5 abiotic factor

kkurt [141]

I won’t draw it but I can give you 10 Biotic and 5 abiotic
Abiotic: soil, rocks, water, wind, sunlight
Biotic: deer, flower, fish, grass, tree, hawk, human, frog, mouse, worm

8 0

3 years ago