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Ira Lisetskai [31]
4 years ago
11

Exploring melting outside,inside room an in fridge????

Chemistry
1 answer:
den301095 [7]4 years ago
5 0

Answer:

yes

Explanation:

that is all due to temperature

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The ability to do work is.....<br><br> matter<br><br><br><br> energy<br><br> molecules
abruzzese [7]

Answer:

energy

energy is the reason why people can do things

6 0
3 years ago
2BrO3- + 5SnO22-+ H2O5SnO32- + Br2+ 2OH- In the above reaction, the oxidation state of tin changes from to . How many electrons
Julli [10]

Answer :

The oxidation state of tin changes from (+2) to (+4).

The number electrons transferred in the reaction are, 10 electron.

Explanation :

Redox reaction or Oxidation-reduction reaction : It is defined as the reaction in which the oxidation and reduction reaction takes place simultaneously.

Oxidation reaction : It is defined as the reaction in which a substance looses its electrons. In this, oxidation state of an element increases. Or we can say that in oxidation, the loss of electrons takes place.

Reduction reaction : It is defined as the reaction in which a substance gains electrons. In this, oxidation state of an element decreases. Or we can say that in reduction, the gain of electrons takes place.

Rules for the balanced chemical equation in basic solution are :

First we have to write into the two half-reactions.

Now balance the main atoms in the reaction.

Now balance the hydrogen and oxygen atoms on both the sides of the reaction.

If the oxygen atoms are not balanced on both the sides then adding water molecules at that side where the more number of oxygen are present.

If the hydrogen atoms are not balanced on both the sides then adding hydroxide ion (H^+) at that side where the less number of hydrogen are present.

Now balance the charge.

The given chemical reaction is,

2BrO_3^-+5SnO_2^{2-}+H_2O\rightarrow 5SnO_3^{2-}+Br_2+2OH^-

The oxidation-reduction half reaction will be :

Oxidation : SnO_2^{2-}\rightarrow SnO_3^{2-}

Reduction : BrO_3^-\rightarrow Br_2

First balance the main element in the reaction.

Oxidation : SnO_2^{2-}\rightarrow SnO_3^{2-}

Reduction : 2BrO_3^-\rightarrow Br_2

Now balance oxygen atom on both side.

Oxidation : SnO_2^{2-}\rightarrow SnO_3^{2-}+H_2O

Reduction : 2BrO_3^-+H_2O\rightarrow Br_2

Now balance hydrogen atom on both side.

Oxidation : SnO_2^{2-}+OH^-\rightarrow SnO_3^{2-}+H_2O

Reduction : 2BrO_3^-+3H_2O\rightarrow Br_2+12OH^-

Now balance the charge.

Oxidation : SnO_2^{2-}+OH^-\rightarrow SnO_3^{2-}+H_2O+2e^-

Reduction : 2BrO_3^-+3H_2O+10e^-\rightarrow Br_2+12OH^-

The charges are not balance on both side of the reaction. We are multiplying oxidation reaction by 5 and then added both equation, we get the balanced redox reaction.

Oxidation : 5SnO_2^{2-}+5OH^-\rightarrow 5SnO_3^{2-}+5H_2O+10e^-

Reduction : 2BrO_3^-+3H_2O+10e^-\rightarrow Br_2+12OH^-

The balanced chemical equation in basic medium will be,

2BrO_3^-+5SnO_2^{2-}+H_2O\rightarrow 5SnO_3^{2-}+Br_2+2OH^-

The number electrons transferred in the reaction are, 10 electron.

7 0
3 years ago
¿que fuerza de debera aplicar en un embolo pequeño de una prensa hidraulica de 12cm2 de area ,para levantar un cuerpo de 70000N
n200080 [17]

Answer: un flechazo fácil

Explanation:

7 0
3 years ago
Electron dot diagram for four elements are shown. Which element would be found in Group 13?
gladu [14]

Answer:

D. 1

Explanation:

Just took it :)

8 0
3 years ago
Read 2 more answers
How many moles of Hg will be produced from 39.0 of HgO?
den301095 [7]
<h3><u>Answer;</u></h3>

0.180 moles of HgO

<h3><u>Explanation;</u></h3>

The atomic weight of mercury is 200.5  

The atomic weight of oxygen is 16.0  

Therefore; the molecular weight (per mole) of mercury oxide is 216.5 g

Hence;

Number of moles  = 39 g/(216.5 g/mole)

                              = 0.180 moles of HgO.

7 0
4 years ago
Read 2 more answers
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