Answer:
In ionic compounds, electrons are transferred between atoms of different elements ... For example, two hydrogen atoms bond covalently to form an H2 molecule; each ... is released when one mole of H2 molecules forms from two moles of H atoms: ... atom in each pair is more electronegative: (a) N or P. (b) N or Ge. (c) S or F.
Explanation:
Yo sup??
potential energy is given by
U=mgh
mg=5 N
U1=5*1=5 J
U2=5*1.5=7.5 J
U3=5*2=10 J
Hope this helps.
B2+C2-->2BC
A+BC-->AB+C
exothermic
AB+C-->AC+B
A2+C2-->2AC
A2+B2-->2AB
Classifying reactions as endothermic or exothermic depends on the comparison of energy required to break bonds in the reactants and energy released when new bonds are formed in products. Bond formation generally releases energy and is exothermic, while bond breaking absorbs energy and is endothermic. Therefore, reactions which make more or stronger bonds (AB+C-->AC+B, A2+C2-->2AC, A2+B2-->2AB) are likely exothermic, whilst those breaking more or stronger bonds (B2+C2-->2BC, A+BC-->AB+C) are likely endothermic.
Chemical reactions can be classified as endothermic if energy (usually in the form of heat) is absorbed from the surroundings, or exothermic if energy is released into the surroundings. The key here lies in understanding the concept of bond energy. Essentially, if more energy is required to break the bonds in the reactants than is released when new bonds are formed in the products, the reaction is endothermic. Conversely, a reaction is exothermic if less energy is required to break the bonds in the reactants than is released when new bonds are formed in the products.
Without exact bond energies, we can only hypothesize about the reactions. However, the general rule is that bond formation is exothermic while bond breaking is endothermic. Therefore, any reaction that results in the formation of more or stronger bonds than it breaks would likely be an exothermic reaction (AB+C-->AC+B, A2+C2-->2AC, A2+B2-->2AB). On the other hand, a reaction that requires breaking more or stronger bonds than it forms (B2+C2-->2BC, A+BC-->AB+C) would likely be endothermic.
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As resistance increases in a circuit, the current flowing through the circuit decreases.
This is because resistance opposes the flow of current, so as resistance increases, it becomes more difficult for the current to flow.
This is described by Ohm's Law, which states that the current in a circuit is directly proportional to the voltage and inversely proportional to the resistance.
Therefore, as resistance increases, the current must decrease in order to maintain the same voltage in the circuit.
To know more about current refer brainly.com/question/29396299
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Answer:
the sun is the main sourse of energy
Explanation:
it can be use to save eco system
there will be no pollution
there will be no harmful gases
Air pressure