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3 years ago

How does an atom differ from a molecule? In what ways are they similar?

Chemistry

1 answer:

Yuki888 [10]3 years ago

5 0

Explanation:

Difference between the two:

Atoms are defined as the smallest particle of a chemical element that exists. They are made up of protons, electrons and neutrons. Elements have similar kind of atoms present in them while compounds have different type of elements present in them.

Molecules are formed when two or more atoms of similar or different kinds bond together. For Example: $H_2O,N_2$ etc...

Similarity between the two:

A pure substance is defined as the substance which is formed by same or different type of atoms which are chemically combined in a fixed ratio by mass. Atoms and molecules are considered as pure substances.

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Which of the statements are true ONLY for lonic compounds? (select all that apply)

DENIUS [597]

Answer:

Smallest unit is called a formula unit

Forms between a metal and a nonmetal

Formed by the transfer of electrons

Good conductor when dissolved in water

Forms repeating patterns in a crystal lattice structure

Have high melting and boiling points

Explanation:

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3 years ago

What is the buffer component ratio, (bro-)/(hbro) of a bromate buffer that has a ph of 8.08. ka of hbro is 2.3 x 10-9?

Alla [95]

pKa= -log(ka)

= -log(2.3*10^-9)

= 8.64

Now pH can be calculated using equation:

pH=pka+log(BrO-)/(HBrO)

8.08 =8.64+log(BrO-)/(HBrO)

log(BrO-)/(HBrO)=8.08-8.64

= -0.56

(BrO-)/(HBrO)= 10^-0.56

=0.275

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3 years ago

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anyanavicka [17]

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2 years ago

Which type of metal atoms affect the flame color ?

QveST [7]

The color emitted be larger atoms is lower in energy then the light emitted by smaller atoms

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2 years ago

5. Inside the mouth, these cells are joined together in a sheet. Why are they scattered here?

anyanavicka [17]

Answer:

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Explanation:

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3 years ago