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Ann [662]
2 years ago
15

Unknown compounds can usually be identified based solely on their _____.

Chemistry
2 answers:
RideAnS [48]2 years ago
7 0
B reactivity  because compounds are made of atoms and molecules and you need to know what they react to to know what they are made up of. 
34kurt2 years ago
4 0
Hysical proprerties i think
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Choose all that apply. What tools do scientists use to make decisions when employing reasoning skills?
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B, (logic) D (knowledge)

Explanation:

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7 0
3 years ago
Heat required to raise 1 g of a substance 1°C
Oksana_A [137]

Answer:

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7 0
3 years ago
Which of the following reactions is a synthesis reaction?
Vedmedyk [2.9K]
<h3>Answer:</h3>

B) 4H₂(g) + O₂(g) ⟶ 2H₂O(l)

<h3>Explanation:</h3>
  • Chemical reactions occur when compounds or elements combine to form new compounds or other elements.
  • Chemical reactions may be classified into various types which include synthesis reactions, replacement reaction, decomposition reactions, and precipitation reactions among others.
  • In our case, we were supposed to identify a synthesis reaction.
  • Thus, we need to know what is a synthesis reaction.
  • A synthesis reaction is a reaction that occurs when two elements or small compounds combine to generate a large compound.
  • In this case, B is the choice that shows a synthesis reaction where hydrogen gas combines with oxygen gas to yield water.
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2 years ago
What 2 things have to increase for metamorphisim to occur
Flauer [41]
For metamorphism of rock to occur, temperature and pressure must increase. Rocks created in this manner are called metamorphic rocks.
8 0
3 years ago
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