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irga5000 [103]
3 years ago
6

Balance the following reactions: 1. PbO2 → PbO + O2

Chemistry
1 answer:
Andre45 [30]3 years ago
3 0

Explanation:

2 moles of lead oxide ->

2PbO2 -> 2PbO + O2

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statement 1,mass is conserved durning the reaction. statement 2 sum of mass and energy is conserved durning the reaction. which
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Answer:

Explanation:

None of the statement is true for both chemical and nuclear reactions. In chemical reactions, mass is always conserved and the type of atoms are also conserved.

6 0
3 years ago
The tendency of an element to react is closely related to
Bad White [126]
C. The number of Valence electrons,
Every atom tries to follow the Octet rule i.e To have 8 electrons in its Valence shell.
Every atom tries to accomodate 8 electrons in its Valence shell to stabilize themselves, Metals usually have 1-3 eletrons in their Valence shell which they donate to non metals so their Valnce shell has 8 electroons, (The previous will now be the Valence shell and it will be full)
Similarly Non metals have 4-7 electrons, they accept electrons from metals so they can have 8 electrons in their Valence shell.
Noble gases already have 8 electrons in their Valance shell, so they do not react and stable.

Hope it helps :)

8 0
3 years ago
Negative charge is placed in an eletric
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I would i have think it is either a) east or c) west b/c couldn’t go by it self
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Where do electrons prefer to spend most of their time ?
zlopas [31]

around the oxygen atom

7 0
3 years ago
Read 2 more answers
Calculate the volume occupied by 32.0 g of O2 gas, the pressure of the O2 gas is 78.5 kPa at 25°C.
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Answer: 31.5L

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