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tatyana61 [14]
4 years ago
12

A common demonstration in chemistry courses involves adding a tiny speck of manganese(IV) oxide to a concentrated hydrogen perox

ide solution. Hydrogen peroxide decomposes quite spectacularly under these conditions to produce oxygen gas and steam (water vapor). Manganese(IV) oxide is a catalyst for the decomposition of hydrogen peroxide and is not consumed in the reaction. What are the coefficients in the balanced chemical equation for this reaction?
Chemistry
1 answer:
Nuetrik [128]4 years ago
6 0

Answer:

2H_{2}O_{2} ---> 2H_{2}O + O_{2}

2,2,1 being the coefficients

Explanation:

These type of question rely on the person answering the question knowing the formula of hydrogen peroxide. Hydrogen peroxide has a formula that is very similar to that of water except it has a two after the O, which makes it very easy to remember.

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Find the number of molecules in .815 mole of O2​
Simora [160]

Answer:

4.9 × 10²³ molecules

Explanation:

Given data:

Number of molecules = ?

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Solution:

The given problem will solve by using Avogadro number.

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The number 6.022 × 10²³ is called Avogadro number.

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3 years ago
How many ions are in the following compounds?<br> a. (NH4)3PO4 =<br> b. NaCl =
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Answer:

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3 years ago
A student is investigating the pH of a substance. The pH of the unknown substance is 5.4. Which of the following substances is t
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Answer:

  • <u><em>Substance A.</em></u>

Explanation:

pH is a measure of the concentration of H₃O⁺ ions in a solution.

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For the given substances

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                           M

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    C               error                      - - - - - -

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3 years ago
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11111nata11111 [884]
Alkene. hope this helps.
6 0
3 years ago
Read 2 more answers
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