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MaRussiya [10]
3 years ago
5

Which of the following are indicators of a chemical change? Select all that apply.

Chemistry
2 answers:
Arturiano [62]3 years ago
4 0
<span>Which of the following are indicators of a chemical change? Select all that apply.
</span>
These are the answers:

<span>color change
temperature change
precipitate formation
gas formation

Hope this helps.
</span>
Lorico [155]3 years ago
4 0
The awnser is A and B beacause chemical changes are what is on a molecular level while the other choices are physical changes.
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How many grams of Fe2+ are there in 0.003109 moles of Fe2+?
Sergio [31]

Answer: 0.174 g

Explanation:

First of all understand that charge on an atom like here 2+ will not vary molar mass. because ions are formed by loss or gain of electrons and electrons do not contribute to the mass of an atom or ion. so losing or gaining electron doesnt create any difference.

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1 mole of Fe2+ weighs 56 g

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