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Triss [41]
3 years ago
7

What were the first 10 elements of the periodic table?

Chemistry
2 answers:
valentina_108 [34]3 years ago
8 0
Hydrogen,helium,lythium,beryllium,boron,carbon,nitrogen,oxygen,flourine,neon
SVETLANKA909090 [29]3 years ago
5 0
H. Hydrogen
He. Helium
Li. Lithium
Be. Beryllium
B. Boron
C. Carbon
N. Nitrogen
O. Oxygen
F. Fluorine
N. Neon

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ANSWERS NEEDED ASAP
Artemon [7]

1 and 2 the forces holding water molecules together are stronger than the forces holding alcohols molecules together these forces are stronger in water due to hydrogen bonding the intermolecular forces forces that hold the water together are stronger than alchol because water has hydrogen bonding hydrogen bonding is hydrogen being attracted to oxygen or flourine or chloroine the electronegativity differences are larger the forces holding the bonds are stronger its like hydrogen is holding on to oxygen strongly different types of forces are lomdon dispersion forces like helium which have low boiling point they have nothing holding them together water has hydrogen bonds alcohol doesnt have the hydrogen bonds water has and geometry vsper model polar and hydrogen bonds as water so theyre weaker.

3 0
3 years ago
Evaluate the exponential expression (−2)6.
Olegator [25]

A general exponential expression is something like:

A^n

This means that we need to multiply the number A by itself n times.

Using that we will get (-2)^6 = 64

With that definition, we can rewrite:

(-2)^6 = (-2)*(-2)*(-2)*(-2)*(-2)*(-2)

So we just need to solve the above expression.

Also, remember the rule of signs:

(-)*(-) = (+)

We will get:

(-2)*(-2)*(-2)*(-2)*(-2)*(-2) =  [(-2)*(-2)]*[(-2)*(-2)]*[(-2)*(-2)]

                                        =  4*4*4 = 16*4 = 64

Then we got:

(-2)^6 = 64

If you want to learn more, you can read:

brainly.com/question/17172630

6 0
3 years ago
Air is made up of about 21% oxygen and 78% nitrogen.
gladu [14]
I believe its A "Air is made up of about 21% oxygen and 78% nitrogen. In this solution, oxygen is the solute and nitrogen is the solvent.
6 0
4 years ago
Which statements accurately describe trends found in the periodic table? check all that apply. henry moseley established a perio
Molodets [167]

YES thanks! A C and E are correct

6 0
3 years ago
Read 2 more answers
Why is it important to use standardized safety symbols on all hazardous products
Lilit [14]
It's simply, e.g. I'm from Poland, imagine that you give me strong acid (HF, dangerous corrosive substance), so how can I recognize that this substance is dangerous? Safety symbols on all hazardous products are <span>requirement in chemistry.</span>
7 0
3 years ago
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