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algol13
2 years ago
5

What could you change or add to your models based on what you have learned about molecules and phases so far?

Chemistry
2 answers:
timurjin [86]2 years ago
5 0

Answer:Phase changes require either the addition of heat energy (melting, evaporation, and sublimation) or subtraction of heat energy (condensation and freezing). ... Changing the amount of heat energy usually causes a temperature change.

Explanation:

babymother [125]2 years ago
3 0
Ummm I don’t know ‍♀️
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d. Fe(s) and Al(s)

<h3>Further explanation</h3>

In the redox reaction, it is also known  

Reducing agents are substances that experience oxidation  

Oxidizing agents are substances that experience reduction

The metal activity series is expressed in voltaic series  

<em>Li-K-Ba-Ca-Na-Mg-Al-Mn- (H2O) -Zn-Cr-Fe-Cd-Co-Ni-Sn-Pb- (H) -Cu-Hg-Ag-Pt-Au  </em>

The more to the left, the metal is more reactive (easily release electrons) and the stronger reducing agent  

The more to the right, the metal is less reactive (harder to release electrons) and the stronger oxidizing agent

So that the metal located on the left can push the metal on the right in the redox reaction  

The electrodes which are easier to reduce than hydrogen (H), have E cells = +

The electrodes which are easier to oxidize than hydrogen have a sign E cell = -

So the above metals or metal ions will reduce Pb²⁺ (aq) will be located to the left of the Pb in the voltaic series or which have a more negative E cell value (greater reduction power)

The metal  : d. Fe(s) and Al(s)

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3 years ago
If the bright lines in the spectrum of oxygen are matched by lines in the dark-line spectrum of the sun, what does that indicate
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Hello young fellow friend I think the anwser is (C)
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A 4.5-liter sample of a gas has 0.80 mole of the gas. If 0.35 mole of the gas is added, what is the final volume of the gas? Tem
AVprozaik [17]

Answer:

6.5 liters will be your answer

Explanation:

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if an element has an atomic mass of 127 and an atomic number of 53, how many neutrons does it have? 74 127 53 75
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