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sertanlavr [38]
4 years ago
14

The central core of an atom is called the

Chemistry
1 answer:
Klio2033 [76]4 years ago
8 0
Nucleus of the atom, that contains protons and neutrons.
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Distinguish between ethane ethyne and ethene<br>​
umka21 [38]

Answer:

ethane=c2h6

ethyne=c2h2

ethene=c2h6

Explanation:

ethane has single bond between carbon atoms(it is alkane.) ethyne has triple bond between carbon atoms(it is alkyne) ethene has double bond between carbon atoms (it is alkene)

7 0
3 years ago
5.40 g B determine the number of atoms
sdas [7]
Atomic mass Boron ( B ) = 10.811 u.m.a

10.811 g -------------- 6.02x10²³ atoms
5.40 g ----------------- ?? atoms

5.40 x ( 6.02x10²³) / 10.811 =

3.0069x10²³ atoms
4 0
3 years ago
The diameter of a carbon atom is 1.54 å. (a) express this diameter in picometers. (b) how many carbon atoms could be aligned sid
makkiz [27]

Answer: -

(a) 1.54 x 10² pm

(b) 1.3 x 10⁶ is the number of carbon atoms could be aligned side by side in a straight line across the width of 0.2 mm.

Explanation: -

1 å = 10² pm

Diameter of a carbon atom = 1.54 å = 1.54 x 10² pm

1 mm = 10⁹ pm

Total distance = 0.2 mm = 0.2 x 10⁹ pm

Number of carbon atoms could be aligned side by side in a straight line across the width = Total distance / Diameter of a carbon atom

= \frac{0.2 x 109 pm}{1.54 x 102 pm}

= 1.3 x 10⁶

6 0
4 years ago
Which two parts of sedimentary rock formation include the breakdown and carrying away of existing rock?
Rzqust [24]

erosion and weathering.

erosion as in breaking it down, weathering is also a cause of erosion, but in the case of rain, it would carry away the remaining sediments.

3 0
3 years ago
Read 2 more answers
An atom with 2 protons and 4 neutrons is called?
Ludmilka [50]

Answer:

Its nucleus

Explanation:

also contains two neutrons. Since 2 + 2 = 4, we know that the mass number of the helium atom is 4. Finally, the helium atom also contains two electrons since the number of electrons must equal the number of protons.

3 0
3 years ago
Read 2 more answers
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