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Dmitry_Shevchenko [17]
3 years ago
13

What is earths surface made of?

Chemistry
2 answers:
hram777 [196]3 years ago
8 0
Earths surface is made of rock
PIT_PIT [208]3 years ago
5 0
The rocky surface layer of Earth, called the crust, is made up of mostly oxygen, silicon, aluminum, iron, calcium, sodium, potassium and magnesium.
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Explain the meaning of each term in the symbol aXz
Ede4ka [16]

AXz

Explanation:

It is a chemical notation of nuclide

Here X is the symbol of the element

A is the mass number of element

A=n+p(sum of protons and neutrons)

Z is the atomic number.

For example, 12C6

Hers X is C, symbol of carbon

12 is the mass number and 6 is the atomic number of the carbon.

8 0
3 years ago
What element is an atom that has 7 protons 8 neutrons and 6 electrons?
andreev551 [17]

Answer:

I think it should be Carbon.

6 0
3 years ago
Read 2 more answers
If a gas is compressed from 4 L to 1 L and the temperature remains constant, what happens to the pressure?
Luba_88 [7]
If T=const
P1V1=P2V2
P1*4L=P2*1L
P2=4P1
pressure increases by factor of 4
4 0
3 years ago
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Which shows an isomer of the molecule below?
VashaNatasha [74]

Answer:

The Isomer molecule C

explanation:

4 0
3 years ago
What is the molecular formula of the molecule that has an empirical formula of CH2O and a molar mass of 120.12 g/mol
ZanzabumX [31]

Answer:

C4H8O4

Explanation:

Let (CH20)x

C=1*12.01=12.01     (12.01, 1.01, 16.00 Avg mass of elements)

H=2*1.01=2.01

O=1*16.00=16.00

12.01 + 2.01 + 16.00 = 30.03

120.12/30,03=4

==> (CH2O)4 = C4H8O4

5 0
3 years ago
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