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SVEN [57.7K]
2 years ago
15

This is for anyone who’s good with science coz I absolutely hate it. ILL BRAINLIST U AND GIVE U 5 STAR TO WHOEVER IS GOOD;) be s

pecific and use ur own words please! thankyou. and good luck LOL.
conclusions:

The burning candle is an example of a combustion reaction.
a) What do all combustion reactions require?
b) What do all combustion reactions produce?
c) Write a general word equation for the combustion reaction.
Chemistry
2 answers:
marin [14]2 years ago
6 0

Answer:

a) oxygen is nessasary for all combustion to occur

b)carbon dioxide and water

c)for example combustion of methane:

<h3>CH4+2O2 -------> CO2+H2O</h3>
marusya05 [52]2 years ago
4 0

Answer:

A) Oxygen

B) Heat

C)

Explanation:

Hope it helps

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What percentage of radioactive substance remains after two half-lives
Ksju [112]

Answer:

After 2 half-lives there will be 25% of the original isotope, and 75% of the decay product. After 3 half-lives there will be 12.5% of the original isotope, and 87.5% of the decay product. After 4 half-lives there will be 6.25% of the original isotope, and 93.75% of the decay product.

Explanation:

3 0
2 years ago
Which of the following groups of elements are likely to be radioactive? (5 points) a Actinides b Noble gases c Transition metals
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Answer:

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Explanation:

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3 years ago
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Alenkasestr [34]

Answer:

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Explanation:

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From the available bonds

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The bond between oxygen and hydrogen has the greatest polarity.

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Andrews [41]
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Explain why a solution can have many solutes, but only one solvent.
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