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Which compound is formed from its elements by an exothermic reaction at 298 K and 101.3 kPa?
Wiki User
∙ 10y ago
H2O(g)
Wiki User
∙ 10y ago
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What is formed when elements join together?
A compound is formed when elements join together.
What are constituent elements of a compound?
Chemical compounds are formed from chemical elements.
In a reaction between MgCOËÄ and NHËÅBr the new magnesium compound formed would be?
In a reaction between MgCOËÄ and NHËÅBr the new magnesium compound formed would be MgBr2
What happens when 2 or more elements bond?
When two or more elements form a bond, they do so either by sharing electrons, or by one element donating and one element accepting electrons. In the former case, you have a covalent bond. In the latter case, it is an ionic bond.
Is Br2 a molecular compound?
No. Bromine is an element. Br2, dibromine, is the diatomic form of the element. A compound is formed from 2 or more different elements.
What type of reaction does potassium chloride have?
The compound contains the two elements Potassium and chlorine it is an exothermic chemical reaction because it releases heat energy when formed.
When does a compound form?
Compounds are formed in chemical reactions of either other compounds, or elements, or a combination of elements and compounds.For example burning hydrogen and oxygen is an exothermic chemical reaction that forms water, a new compound.
Is Na2CO3 H2O endothermic or exotermic reaction?
If formed out of elements C + O2 it is exothermic (heat, fire); But as degradation of complex compounds it depends on the compound used and other product formed, but a lot of degradations are endothermic (needs high temperatures and stops after heating is stopt, it cools 'itself' down)
When two different elements combine to form a compound the resulting properties of the compound are?
Not necessarily anything like those of the elements.
What is the formula for ionic compound formed by the reaction of the elements barium and oxygen?
BaBr2
What is formed when elements andcompounds combine but not chemicaly?
of course nothing because a compound is only formed by chemical reaction
When elements are chemically combined they form?
They form compounds. For example, Na + Cl --> NaCl The compound formed depends on the elements in the reaction.
What is the difference between a endothermic reaction and a exothermic reaction?
we can answer this question by studying the words themselves. firstly thermic relates to heat. more to the point endo is a prefix for inside while exo is a prefix for outside. therefore an endothermic reaction is one which absorbs heat while an exothermic reaction is one that emits heat. exothermic reaction releases heat from a system to the environment..i.e. explosion of bomb. while endothermic absorbs heat from the environment to the system..i.e. frying fish.
What it is substance formed when two or more elements combine?
A compound
What means a chemical reaction that produces heat as products are formed?
Exothermic
Why is energy released in a exothermic reaction?
Energy is released in an exothermic reaction because bonds are being formed.
What is a pure substance which is formed by a chemical reaction between two or more different substances called?
A compound is the pure substance formed from the chemical combination of two or more different elements.
