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kiruha [24]
3 years ago
13

How are substances and mixtures different and alike???

Chemistry
1 answer:
nikklg [1K]3 years ago
6 0

A mixture is composed of more than one substance combined
A pure substance cannot be decomposed in any reaction
<span>Both are considered types of substances 
</span>hope it helps you playa!

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Alcl3+Na =NaCl+ Al .did Al change oxidation number
saul85 [17]

Answer:

yes it is ( From +3 to 0 )

Explanation:

If this is the balanced equation:

AlCl3     +    3Na ——>    3NaCl      +      Al

Al      Cl        3Na             Na     Cl            Al

+3     -3        0                    +1       -1            0

5 0
3 years ago
How many moles of ions are there in 3 moles of calcium chloride?
klemol [59]

Answer:

9 moles of ions

Explanation:

Our compound is: CaCl₂(s)

We dissociate it:

CaCl₂(aq) → Ca²⁺ (aq) + 2Cl⁻(aq)

Per 1 mol of chloride, we have 1 mol of calcium cation and 2moles of chlorides, so in total we have 3 moles of ions.

Therefore in 3 moles of chloride, we would have 9 moles of ions (3 . 3)

5 0
3 years ago
Of the groups below, which are the least chemically reactive?
seropon [69]

It is actually Group 3A elements. I just took the test.

8 0
3 years ago
Can someone please help me!!!!
Ostrovityanka [42]

Answer:

b

Explanation:

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4 0
3 years ago
What do you call a bond that forms when electrons are transferred from one atom to another?
AlekseyPX
It is called an ionic bond
4 0
3 years ago
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