3 years ago

A substance made up of two or more types of atoms that are NOT chemically combined is called a(n)

Chemistry

1 answer:

creativ13 [48]3 years ago

4 0

Answer:

pure substance

Explanation:

it does not combine to anything.

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Where do scientists believe chemical evolution occurred?

NeX [460]

Hello there!

They believe that the chemical evolution occurred around 3.5 billion years ago.

They also believe that the chemical occurred in the ocean

As always, it is my pleasure to help students like you!

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2 years ago

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an acid based titration was performed. it took 27.45 mL of the base, KOH, to titrate 3.115 g HBr, the acid. what was the molarit

sveticcg [70]

Answer:

1.4 M

Explanation:

n(HBr)=3.115/81

so, 3.115/81=0.0385mol

according to the reaction, n(HBr)=n(KOH)=0.038 mol

C(KOH)=n/V=0.0385/0.02745

0.0385/0.02745 =1.4 M

in short the answer is 1.4 M (molarity)

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2 years ago

An ice wedge shattering a slab of shale a Chemical Change b Physical Change

Brilliant_brown [7]

Answer:

Physical Change

Explanation:

Its a physical change because it is not changing its molecular structure it is only changing the shape of the shale.

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2 years ago

What is the double bond of XeF4

irina1246 [14]

I think it’s 4 bonding correct me if I’m wrong

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2 years ago

All light waves can be described in terms of their speed, frequency, and_____

coldgirl [10]

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2 years ago