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Reptile [31]
3 years ago
10

The central core of an atom is called the

Chemistry
1 answer:
g100num [7]3 years ago
5 0

Answer:

The central portion is called neutron.

Explanation:

An atom has a central part known as nucleus and outer shells.

The central nucleus contains protons (the positively charged sub atomic particle) and neutrons (the neutral sub atomic particle).

The outer portion has negatively charged sub atomic particle known as electrons.

The atomic number of an element is the number of protons present in the nucleus.

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Mkey [24]

Answer:

when an entire species of animal dies and it is no longer present on the earth it is call extinct

7 0
3 years ago
How many moles of air are necessary for the combustion of 5.00 molmol of isooctane, assuming that air is 21.0% O2O2 by volume?
Annette [7]

Answer:

67.5 moles of O2

Explanation:

2  C 8 H 18  +  27 O 2  →  16 C O 2  +  18 H 2 O

According to the balanced chemical equation, in normal air % moles of iso-octane will require 67.5 moles of oxygen to combust completely...

8 0
4 years ago
1. Which metal is the most reactive? How do you know this?​
Novosadov [1.4K]

Answer:

cesium

Explanation:

The most reactive metal on the periodic table is francium. However, francium is a man-made element and only minute quantities have been produced, so for all practical purposes, the most reactive metal is cesium. Cesium reacts explosively with water, though it is predicted francium would react even more vigorously.

5 0
4 years ago
Which statement is TRUE about liquid and gases? *
Levart [38]

Answer:

The Answer is gonna be d. They assume the shape of container

This is the right Answer

I hope you are having a great day :3

5 0
3 years ago
Is there a state of matter in which the molecules are not moving at all? What is this phenomenon known as?
natali 33 [55]

Answer:

No

Explanation:

There is no possible physical way for there to be an object without the molecules moving. There is a temperature called <u><em>absolute zero</em></u>,* however, there will always be some form of heat to touch everything, so nothing will ever be "frozen solid."

  • (*) By international agreement, absolute zero is defined as precisely; 0 K on the Kelvin scale, which is a thermodynamic (absolute) temperature scale; and –273.15 degrees Celsius on the Celsius scale.
3 0
4 years ago
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