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miv72 [106K]
2 years ago
13

How do you make a model of something you cannot see?

Chemistry
2 answers:
Vedmedyk [2.9K]2 years ago
8 0
You have to imagine it
ANEK [815]2 years ago
3 0
In science, a model is a representation of an idea, an object or even a process or a system that is used to describe and explain phenomena that cannot be experienced directly. Models are central to what scientists do, both in their research as well as when communicating their explanations.

Models are a mentally visual way of linking theory with experiment, and they guide research by being simplified representations of an imagined reality that enable predictions to be developed and tested by experiment.
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How many moles of 2H2 are formed from 3.64 mole of H2O?​
tatiyna

Answer: 2 H2 + O2 → 2 H2O, you get the same number of moles of water as H2, as long as you have 1 mole of O2. So, with 3 moles of H2, as long as you have 1.5 moles of O2, you will get 3 moles of H2O. In my opinion.

5 0
2 years ago
Select ALL! the solutes below that would be soluble in a polar solvent (like water).
Fofino [41]

Answer:

K2SO4, NH3, HOCI, HCI, CH3NH2,  SiCl4, CO2, CH20

Explanation:

Substances are soluble in water when they are ionic or polar covalent substances.

If we look at the substances listed, K2SO4 is ionic while  NH3, HOCI, HCI, CH3NH2,  SiCl4, CO2, CH20 all contain polar covalent bonds which accounts for their water solubility.

Hence ionic and polar covalent substances are soluble in a polar solvent such as water.

6 0
3 years ago
What is the overall trend for ionization energy on the periodic chart?
gizmo_the_mogwai [7]

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Explanation:

Brainliest plz

7 0
3 years ago
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kvv77 [185]
Because if you have a liquid then you need a glass to keep it together and when it is a solid it is already together so you don't need to do anything
7 0
3 years ago
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Which of the following is a property of a metal?
BaLLatris [955]
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