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puteri [66]
3 years ago
15

How do I do a balancing equation. I understand. Can you show me a step by step on how to do one of the equations that aren't don

e?

Chemistry
1 answer:
sasho [114]3 years ago
8 0
To balance a chemical equation, you first must count the number of each of the atoms on both the left hand side - reactant side and the right hand side - product side of the chemical reaction.

After counting the atoms, make a tally of the atoms on both sides, for instance if it is hydrogen - h, record the number of hydrogen atoms on the reactant and product side. Then, place coefficients at appropriate places for the elements and or compounds, to basically have all of the different kinds of atoms from their respective elements equal the same on both the left and right side of the reaction.

SnO2 + H2 > Sn + H2O
1st count the metals - Sn atoms on both sides -
Sn left side - 1
Sn right side - 1

2nd count the oxygen atoms on both sides
O atom left side - 2
O atom right side - 1.

Here, the atoms are not the same, so place a coefficient on the side with the least number of oxygen atoms, right side, put 2 to balance.

Now O atoms are same on both sides, 2 atoms but, there are 4 hydrogen atoms now,

Since 2H2O = 2H2 + 2O = H = 4 and O = 2.

Now place the coefficient of 2 on the side with Hydrogen atoms by itself, left side, now this also gives us 4 hydrogens.

So balanced equation:
SnO2 + 2H2 > Sn + 2H2O.
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Um átomo X possui 8 neutrons e seu número atômico e igual a 8. Sabendo que esse atomo é isótopos de Y, que possui número de mass
hodyreva [135]
<u>Question in English : </u>
<span>
<em>An atom X has 8 neutrons and its atomic number equals 8. Knowing that this atom is isotopes of Y, which has mass number 18, answer: What is the number of neutrons in atom Y?</em>

</span><span><u>Answer :</u>

</span>

Isotopes are defined as the atoms which have same number of protons but different number of neutrons of same element. Since the proton number is same, the atomic number also same. Hence the atomic number of Y is 8.

Mass number = atomic number + neutron number

                   18 = 8 + neutron number

Neutron number = 10

 

Hence, there are 10 neutrons in Y.

3 0
3 years ago
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frozen [14]

Answer:

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Explanation:

It may seem crazy how Earth's orbit around the sun make climate change, but how else would 4 seasons exist. The orbit tends to be in an oval shape. The top parts of the oval, would represent winter and fall because of the distance between the sun decreases. The closer sides of the oval however, would represent Summer and spring because those are the warmer months and show that Earth is closer to the sun.

8 0
3 years ago
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The nucleus while large has a small ratio of mass when dealing with atoms, they are very spread out and are mostly solid with a blocky shape.
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Explanation:

Just did the test and got it right

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