Plz help me I Am timed plz

Chemistry

1 answer:

nexus9112 [7]3 years ago

3 0

Answer:

D) Trees

Explanation:

I'm sure its trees, because once you cut all trees you cant regenerate, or replenish them. hope im right, sorry of its wrong!!

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IRINA_888 [86]

What are <span>stoichiometry equations?</span>

5 0

3 years ago

If an element has more than one ionic charge, how is that piece of information represented in a chemical name?

Lostsunrise [7]

Usually with roman numerals, like iron (II) chromate
iron has a charge of 2
or manganese (IV) oxide, manganese has a charge of 4
(these are ionic compounds just to let you know)

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3 years ago

Using complete subshell notation (1s22s22p6, and so forth), predict the electron configuration of each of the following atoms: a

masha68 [24]

Answer: a) $C:6:1s^22s^22p^2$

b) $P:15:P:1s^22s^22p^63s^23p^3$

c) $Sb:1s^22s^22p^63s^23p^64s^23d^{10}4p^64d^{10}5s^25p^3$

Explanation:

Electronic configuration represents the total number of electrons that a neutral element contains. We add all the superscripts to know the number of electrons in an atom.

The electrons are filled according to Afbau's rule in order of increasing energies and thus the electronic configuration:

a) $C:6:1s^22s^22p^2$

b) $P:15:P:1s^22s^22p^63s^23p^3$

c) $Sb:1s^22s^22p^63s^23p^64s^23d^{10}4p^64d^{10}5s^25p^3$

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4 years ago

Is water a element or compond <br> and is it a homogeneous or heterogeneous

crimeas [40]

Answer:

Water is a compound. It contains more than one element

water is homogeneous

8 0