4.88x10^20 H2O2 molecules
Answer:
28
Explanation:
electron = atomic number - charge(if the charge is positive and addition if the charge is negative)
electron = 30 - 2
electron = 28
Answer: N-N: 145 pm and 167 KJ/mol
N=N: 125 pm, 418 KJ/mol
And N2: 110 pm , 942 KJ/mol
Explanation: Bond length is inversily proportional to bond energy.
Greater the bond length , smaller the bond energy and vice-versa.
According to the research, the correct option is remove. An air-to-air heat pump removes heat from the outside air and deposits it in the conditioned space.
<h3>What are heat pumps?</h3>
It is characterized by being a thermal machine or a device based on thermodynamics that, through an absorption process, takes heat from one place and transfers it to another, that is, it extracts heat from a cold source to a hot one.
An air-to-air heat pump starts by sucking in outside air or recovers heat from outside and transfers it to a higher temperature level in the ambient air, raising the temperature of the room, being adjustable to adapt to the heating needs of the conditioned space.
Therefore, we can conclude that according to the research, the correct option is remove. An air-to-air heat pump removes heat from the outside air and deposits it in the conditioned space..
Learn more about heat pumps here: brainly.com/question/1081420
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1. 2Al(s)+6HCl(aq)⇒2AlCl₃(aq)+3H₂(g)
2. 2AgNO₃ (aq) + Cu (s)⇒Cu(NO₃)₂ (aq) + 2Ag (s)
3. 2C₃H₈O(l) + 9O₂(g) ⇒ 6CO₂(g) + 8H₂O(g)
<h3>Further explanation</h3>
There are several reactions that can occur in a chemical reaction: single replacement, double replacement, synthesis, decomposition or combustion, etc.
1.Al(s)+HCl(aq)⇒AlCl₃(aq)+H₂(g)
type : single replacement
balance :
2Al(s)+6HCl(aq)⇒2AlCl₃(aq)+3H₂(g)
2. AgNO₃ (aq) + Cu (s) ⇒ Cu(NO₃)₂ (aq) + Ag (s)
type : single replacement
balance :
2AgNO₃ (aq) + Cu (s)⇒Cu(NO₃)₂ (aq) + 2Ag (s)
3. C₃H₈O + O₂ ⇒ CO₂ + H₂O
type : combustion of alcohol
balance :
2C₃H₈O(l) + 9O₂(g) ⇒ 6CO₂(g) + 8H₂O(g)
