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USPshnik [31]
3 years ago
6

This is 20 points!!!

Chemistry
1 answer:
Ann [662]3 years ago
5 0

Answer:

I think it both physical & chemical change :')

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ahrayia [7]

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B is the answer because it doesn't matches the num of valence electrons

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A collection of coins contains 14 pennies, 16 dimes, and 7 quarters. What is the percentage of pennies in the collection?A colle
marin [14]

Answer:

=37.83783784

Explanation:

Find the total sum of all coins,

which is 37, take the number of pennies and the total of all coins put in parenthesis( 14/37) like so and than * times them by 100

you equation should look like this

(14/37)* 100= and than the answer shown above should be the one you received. I have checked this with multiple calculators, it should be accurate.  

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