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Lyrx [107]
3 years ago
9

If a combustion reaction is reversed, what needs to happen to the H value?

Chemistry
1 answer:
zmey [24]3 years ago
3 0

Answer:

decomposition of the h value

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Which two elements have similar physical and chemical properties?
guapka [62]

Explanation:

Elements in the same group have same number of valence electrons. And we know, the elements which have same number of valence electrons, have similar physical and chemical properties. Hence, the elements in the same group have similar physical and chemical properties.

5 0
3 years ago
What is a displacement reactions​
Alisiya [41]

<h2><u>Question</u><u>:</u>-</h2>

\textsf{what is a displacement reactions?   }      

<h2><u>Answer</u><u>:</u></h2>

\large \underbrace{ \underline{ \sf Displacement \: reaction}}

The reaction in which more reactive element replace a less reactive element from its compound is called displacement reaction.

Ex:-

\bold{\large Zn+HCl \longrightarrow ZnCl_2+H_2}

6 0
3 years ago
Read 2 more answers
How many significant figures are in the following number? 0.000485
aliina [53]

Answer:

4 or 3

Explanation:

8 0
3 years ago
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III. For the following four sections: If you are given the formula, name the
serious [3.7K]

Answer:

15.Potassium oxide

16.Calcium chloride

17.Aluminium sulphide

18.CaS

Explanation:

15.K is the chemical symbol of Potassium and generally the name of the non-metal at the end of a formula has the suffix '-ide' and since O is oxygen, the name becomes Potassium oxide.

16. The same applies here. Ca is Calcium and Cl is Chlorine but since its the non-metal at the end, it ends in -ide. So Calcium chloride.

17.The same applies here too. Al is Aluminium and S is Sulphur so Aluminium sulphide.

18. Calcium's symbol is Ca and that of Sulphur is S and that gives the formula CaS.

5 0
3 years ago
What happens to a magnetic field if the current carrying wire A has three times as many loops but the same current as the curren
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More the number of turns, more will be the magnetic field produced.

Hence wire A will have magnetic field greater than wire B.

Hope this helps!
5 0
3 years ago
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