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MissTica
3 years ago
9

1. Write the balanced equation for the breakdown of hydrogen peroxide. The equation has been written, you just have to balance.

Chemistry
2 answers:
Mnenie [13.5K]3 years ago
8 0

Explanation:

A balanced equation is defined as the equation which contains same number of atoms on both reactant and product side.

For example, H_{2}O_{2} \rightarrow H_{2}O + O_{2}

Number of atoms on reactant side are as follows.

  • H = 2
  • O = 2

Number of atoms on product side are as follows.

  • H = 2
  • O = 3

Therefore, balance this equation by multiplying H_{2}O_{2} by 2 on reactant side. Thus, the balanced chemical equation is as follows.

         2H_{2}O_{2} \rightarrow H_{2}O + O_{2}

o-na [289]3 years ago
7 0
The balanced equation is attached in the image below. The coefficients are 2, 2, blank.

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Elements are organized into groups / families according to their physical and chemical properties. Identify the elements that's
Kryger [21]

Answer:

1 valence - Alkali Metals: Li Lithium, Na Sodium, K Potassium

2 valence - Alkaline Earth Metals: Be Beryllium, Mg Magnesium, Ca Calcium

3 valence - Non-metals: B Boron, Al Aluminium

4 valence - Non-metals: C Carbon, Si Silicon

5 valence - Non-metals: N Nitrogen, P Phosphorus

6 valence - Non-metals: O Oxygen, S Sulfur, Se Selenium

7 valence - Halogens: F Fluorine, Cl Chlorine, Br Bromine

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3 0
3 years ago
2Na(s) + Cl2(g) - 2NaCl(s) + 822 kj
pychu [463]

Answer:

Is there any other part to this question? If not I'm pretty sure the answer is 205.5 kJ

Explanation:

8 0
3 years ago
Read 2 more answers
Of the groups below, which are the least chemically reactive?
seropon [69]

It is actually Group 3A elements. I just took the test.

8 0
3 years ago
Mercury (Hg) poisoning is a debilitating disease that is often fatal. In the human body, mercury reacts with essential enzymes l
alisha [4.7K]

Answer:

6 x 10⁵ kg Hg

Explanation:

The mass of mercury in the entire lake is found by multiplying the concentration of the mercury by the volume of the lake.

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The mass of mercury is then found:

m = CV = (0.4μg/mL)(1g/10⁶μg)(1kg/1000g) x (1.578856752 x 10¹⁵ mL) = 6 x 10⁵ kg Hg

3 0
3 years ago
Will mark as Brainliest.
SVETLANKA909090 [29]
<span>If I done the math correctly it is 3729J because you multiply 16.5 g  by the 2260 J/g and get 3729 J</span>
4 0
3 years ago
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