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IceJOKER [234]
3 years ago
14

Which of the following weighs least?

Chemistry
1 answer:
Lunna [17]3 years ago
7 0

Answer:

A

Explanation:

0.2g of atom of nitrogen is the one that weigh least cause of.2g is not up to one mole of nitrogen

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3. The scientific study of how organisms are classified is called _____.
Vilka [71]
Hey mate!

Taxonomy is the <span>study of classification of organisms. Therefore, your answer is A.

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3 0
3 years ago
a- If an Lithium (atomic number 3) atom has a -2 charge, how many electrons does it have? b- Why do you do it this way? c- Is th
Darina [25.2K]

Answer:

5

Explanation:

A lithium atom with an atomic number of 3 and a charge of -2 will have a total number of electrons.

The atomic number is the number of protons in an atom. For a neutral atom that has not gained or lost electrons, the atomic number is the same as the number of electrons.

   neutral atom: atomic number of electrons

For neutral atom of lithium, we will have 3 electrons

Now, lithium with a charge of -2 has gained two more electrons to the original 3 this now makes it 5.

ii.

It is an anion because it is negatively charged.

Negatively charged particles are called anion.

6 0
2 years ago
When a glass or a watermelon is moved, the volume stays the same. When a liquid is poured into a glass, the volume and the shape
Vera_Pavlovna [14]

Answer:

E

Explanation:

6 0
3 years ago
Why is burning of plastics not considered a good method for their disposal?
Sindrei [870]
Plastics release chemicals and fumes when burned which can harm the enviroment around them. A good method for their disposal would be recycling them so they can later be used as something else.
6 0
3 years ago
The results of the gold foil experiment led to the conclusion that an atom is
viva [34]

\sf\large \blue{\underbrace{\red{Answer⋆}}}:

The nucleus of an atom of the element is positively charged and atom has a hollow space inside it.

Explanation:

This experiment was conducted by Rutherford in this experiment. He placed a gold foil and surround it with a screen.

And He exposed gold foil in alpha particles rays in which he noticed that most rays passed through atom which conclude that atom has a large space, some rays get deflected and some reverse their path this show that the positive charge of nucleus of an atom.

4 0
2 years ago
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