How do I figure out these questions on my own?

[P.Q.]

Question: What is the correct chemical formula of the chloride ion?

Correct answer: Cl-

Question: What is the chemical symbol of tin?

Correct answer: Sn

What is the chemical formula of the tin(II) ion?

A Sn2+

What is the chemical symbol of argon?

A Ar

Question: What is the chemical symbol of carbon?

Correct answer: C

What is the correct chemical formula of the iron(III) ion?

B Fe3+
Question: Which element is a non-metal?

Correct answer: carbon

Question: What is the correct chemical formula of the strontium ion?

Correct answer: Sr2+

Hydrogen is H

Question: What is the correct chemical formula of the sodium ion?

Correct answer: Na+
--

Question 1
Balance the following equation:

__ SnO2 + __ H2 → __ Sn + __ H2O

Balance the following equation:

__ KOH + __ H3PO4 → __ K3PO4 + __ H2O
Question 3
Balance the following equation:

__ KNO3 + __ H2CO3 → __ K2CO3 + __ HNO3
Question 4
Balance the following equation:

__ Na3PO4 + __ HCl → __ NaCl + __ H3PO4
Question 5
Balance the following equation:

__ TiCl4 + __ H2O + __ TiO2 + __ HCl
Question 6
Balance the following equation:

__ C2H6O + __ O2 → __ CO2 + __ H2O
Question 7
Balance the following equation:

__ Fe + __ HC2H3O2 → __ Fe(C2H3O2)3 + __ H2
Question 8
Balance the following equation:

__ NH3 + __ O2 → __ NO + __ H2O
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Question 9
Balance the following equation:

__ B2Br6 + __ HNO3 → __ B(NO3)3 + __ HBr
Question 10
Balance the following equation:

__ NH4OH + __ Kal(SO4)2·12H2O → __ Al(OH)3 + __ (NH4)2SO4 + __ KOH + __ H2O

[P.Q.]

Here is my test results:

Question:

Hydrous copper(II) sulfate produces a blue diamond shaped crystalline.

CuSO4.5H2O

Question:

Acetic acid is a weak acid present in vinegar. The correct formula for acetic acid is




KOH
Should have chosen


H2CO3
Wrong

Question:

Ammonia is a pungent colorless gas that readily dissolves in water producing a basic solution. Its chemical formula is

Response:



NH4+
Should have chosen

NH3
Wrong



Question:

Nitric acid is used in the manufacture of fertilizer and explosives. The chemical formula for nitric acid is

Wrong

NO2



HNO2
Should have chosen

Question:

What is the correct name of N2O4?


dinitrogen oxide
Wrong

nitrogen oxide
Should have chosen



The correct formula for sulfuric acid is

Response:
Should have chosen


HNO3
Wrong


Vinegar is a naturally occurring commonly used in cooking and as a food condiment. The main acid found in vinegar is

HBr
Wrong

HCl
Should have chosen


NaOH is a strong alkali base and is extremely caustic. It is used commercially to make soap and it found in many oven cleaning products. The chemical name for NaOH is
Wrong

Ammonium hydroxide


Ammonia
Should have chosen


Hydrochloric acid can be made from dissolving hydrogen chloride gas in water and it also naturally occurs in the body as stomach acid. The chemical formula for hydrochloric acid is


Should have chosen

HCl
Wrong

HNO3


Bicarb of soda is used in cooking as a leavening agent. It is also called bicarbonate of soda. The correct formula for bicarb of soda is

Correct

NaHCO3

[P.Q.]

1

Write down the original unbalanced equation, with reactants on the left side of the equation and the products on the right side of the equation. As an example, assume the unbalanced equation is

Mg3N2 + H2O ---> MgO + NH3.
2

Choose one element, and see whether there are equal numbers of the element on both sides of the equation. For example, in the above equation, if you choose O (oxygen), you will see that there is one O on both sides of the equation, so this element is balanced. Other elements may not be balanced; for example, there are three Mg (magnesium) atoms in the reactant, and only one in the product.

3

Multiply the chemical which contains the lower amount of an element by the number of elements contained in the chemical on the other side of the equation. In the example used here, since there are three Mg atoms in the reactant and only one in the product, multiply the chemical that contains one Mg atom (in this case, MgO) by three. This gives

Mg3N2 + H2O ---> 3MgO + NH3.
4

Count the number of elements in the new equation, and note any imbalances in the number of elements in the reactant and the product. In the equation balanced in the equation, there are now three O atoms in the product, and one in the reactant. This can be alleviated by adding a three in front of the chemical containing O in the reactant (H20). This new equation gives

Mg3N2 + 3H2O ---> 3MgO + NH3.
5

Continue the process of counting the number of elements on either side of the equation, balancing the number of elements using the methods in the previous step. Concluding the example used here, there are two remaining unbalanced elements: N and H. In the reactant, there are two N atoms and six H atoms; in the product, there are three H atoms and one N atom. Since there are two times as many elements in the chemicals in the product, this equation can be balanced by placing a two in front of the chemical NH3 in the product. This gives
SOURCE:http://www.ehow.com/how_8242786_balance-chemistry-equations.html#ixzz1q93dIkLc