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zaharov [31]
2 years ago
13

Each mineral group has a distinctive chemical feature such as

Chemistry
1 answer:
disa [49]2 years ago
6 0

Answer:

A

Explanation:

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A pure substance that is present before a reaction but not after <br> Super Confused
never [62]

Explanation:

Pure subsance is a substance that is made up of only one type of particle - each piece is the same throughout.

Being present before the reaction but not after means it's no the same (it couldve evaporated)

4 0
3 years ago
When would a life scientist study a nonliving thing such as a rock or lake
VladimirAG [237]
He would study it so he could see how it interacted with the living things around it.

3 0
2 years ago
Hellppppp
Margaret [11]

Answer:

c

Explanation:

you don't think of particles as dense and less dense

dust particles containvenergy but won't release it unless acted upon a force

gas molecules move freely and collide with dust particles which is correct

8 0
2 years ago
How much heat must absorbed by the reaction system to convert 100g of NaNO3 into NaHSO4(s)?
Alex787 [66]

Answer:

about 4.8kJ

Explanation:

6 0
2 years ago
1 Balance each equation. Paragraph Styles Voice Sensity 2) Indicate the type of reaction by classifying each reaction as single
nika2105 [10]

1. Double replacement (DR)

2. Decomposition (D)

<h3>Further explanation</h3>

1. Al2(SO4)3 + Ca3(PO4)2 -> 2AIPO4 + 3CaSO4

Double replacement (DR) : there is an ion exchange between two ion compounds in the reactant to form two new ion compounds in the product

General form :

AB + CD -> AD + CB

2.  2NaCIO3 → 2NaCl + 3O2

Decomposition (D) : Reactant breakdown into simpler ones(reverse of combination)

General form :

AB ---> A + B

6 0
3 years ago
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