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Fittoniya [83]
2 years ago
13

Sort the chemical equations based on the chemical reactions they represent.

Physics
2 answers:
rjkz [21]2 years ago
5 0
The classification would be as follows:

<span>*water → hydrogen + oxygen  =   decomposition
*iron + oxygen → iron oxide    =    synthesis
*sodium + chlorine → sodium chloride        =       synthesis
*sulfur + oxygen → sulfur dioxide              =      synthesis
*potassium + chlorine → potassium chloride        =    synthesis
*calcium carbonate →calcium oxide + carbon dioxide       = decomposition

Hope this answers the question. Have a nice day.</span>
Svetradugi [14.3K]2 years ago
4 0

Decomposition reactions are said to be those reactions in which a reactants breakdown into two or more products. The general reaction for decomposition reactions is as follow,

                                         ABC    →    A  +  B  +  C

Specific Examples are as,

                                Water    →     Hydrogen + Oxygen

                                2 H₂O    →           2 H₂     +      O₂

               Calcium carbonate    →     Calcium oxide + Carbon dioxide

                            CaCO₃              →              CaO         +        CO₂

While, Synthetic reactions are said to be those reactions in which two or more reactants combine to form two or more products. The general reaction for synthetic reactions is as follow,

                                         A  +  B  +  C    →    ABC

Specific Examples are as,

                                  Iron + Oxygen     →     Iron Oxide

                                    2 Fe  +  3 O₂      →        2 Fe₂O₃

                          Sodium + Chlorine     →     Sodium chloride

                              2 Na  +       Cl₂        →            2 NaCl

                            Sulfur + Oxygen      →      Sulfur dioxide

                                  S    +    O₂            →             SO₂

                   Potassium + Chlorine      →      Potassium chloride

                            2 K     +     Cl₂            →              2 KCl

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3 years ago
An airplane undergoes the following displacements: First, it flies 40 km in a direction 30° east of north. Next, it flies 56 km
goldfiish [28.3K]

Answer:

Distance from start point is 72.5km

Explanation:

The attached Figure shows the plane trajectories from start point (0,0) to (x1,y1) (d1=40km), then going from (x1,y1) to (x2,y2) (d2=56km), then from (x2,y2) to (x3,y3) (d3=100). Taking into account the angles and triangles formed (shown in the Figure), it can be said:

x1=d1*cos(60), y1=d1*sin(60)\\\\ x2=x1 , y2=y1-d2\\\\ x3=x2-d3*cos(30) , y3=y2+d3*sin(30)

Using the Pitagoras theorem, the distance from (x3,y3) to the start point can be calculated as:

d=\sqrt{x3^{2} +y3^{2} }

Replacing the given values in the equations, the distance is calculated.

4 0
3 years ago
Someone please help! It is a few science questions. Fairly easy!
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1) 0.92 * 100 = 92 <Solve using the formula which is:
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lana66690 [7]

Answer:

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2. North Dakota

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8 0
3 years ago
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