What type of reaction is shown below?

2 answers:

8 0

<span>What type of reaction is shown below?

2H2O2 → 2H2O + O2

A. synthesis
B. decomposition
C. combustion</span>decomposition

answer is B

vovikov84 [41]3 years ago

5 0

Answer: Decomposition

Explanation:

1. Synthesis is a chemical reaction in which two or more reactants combine to combine to give a single product.

$2Mg+O_2\rightarrow 2MgO$

2. Decomposition reaction is a chemical reaction in which one reactant gives two or more than two products on absorption of energy.

$2H_2O_2\rightarrow 2H_2O+O_2$

3.. Combustion is a chemical reaction in which hydrocarbon burns in the the presence of oxygen to form carbon dioxide, water and energy.

$C_3H_8+5O_2\rightarrow 3CO_2+4H_2O$

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The Average Speed of the orbiting space shuttle is

maxonik [38]

Explanation:

It is given that, the Average Speed of the orbiting space shuttle is 17500 miles/hour.

We need to convert the speed in kilometers/ second

We know that,

1 mile = 1.609 km

1 km = 0.621 miles

1 hour = 3600 seconds

$17500\ \dfrac{\text{miles}}{\text{hour}}=17500\ \dfrac{\text{miles}}{\text{h}}\times \dfrac{1\ h}{3600\ s}\\\\=17500\times \dfrac{\text{miles}}{3600\ s}$

Now cancel the miles in numerator.

$17500\times \dfrac{\text{miles}}{3600\ s}=17500\times \dfrac{\text{miles}}{3600\ s}\times \dfrac{1.609\ km}{1\ \text{miles}}\\\\=17500\times \dfrac{1.609}{3600}\ km/s\\\\=7.82\ km/s$