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Bingel [31]
2 years ago
15

PLEASE HELP!!!

Chemistry
2 answers:
katen-ka-za [31]2 years ago
8 0
The answer is D. Appearance
Anarel [89]2 years ago
3 0

Answer:

E

Explanation:

You can't really tell by their masses. It's very possible to amount them to the same mass because FeS is actually the same when you mix iron and sulfur, therefore producing the same mass.

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on dr v’s bookshelf there are 23 science textbooks each with an average of 31 chapters of each chapter contains 5 pages how many
olga55 [171]

Answer:

There are 3600 pages to 2 significant figures

Explanation:

Working only with the information given, we have that there are 23 books each with about 31 chapters.

This means that if 1 book has 31 chapter, the 23 science books will have

31 X 23 chapters =713 chapters in total.

If each chapter contains 5 pages, for the 713 chapters we will have a total of 713 X 5 pages = 3565 pages.

Rounding off the answer to 2 significant figures , we are looking to have only two non-zero figures in our answer. To do this, we count two numbers from the left. This will be numbers 3 and 5.

Next,  we check the net number after 5 to see if it is greater than 5 if it is, we will have to add the number (1 ) to the 5. This shows that we are approximating upwards, to account for the fact that that number has passed the middle point.

After this, we change the remaining two numbers (6 and 5) to zeroes.

This will give us 3600 pages.

8 0
3 years ago
Gabe​ amodeo, a nuclear​ physicist, needs 8080 liters of a 3030​% acid solution. he currently has a 20 %20% solution and a 60 %6
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i really dont knowb  lfre,;'r;'frke';few frq3wklrndklqwef2

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3 years ago
NEED HELP FAST!!!! 20 POINTS!
zimovet [89]

Answer:

it would be C!!

Explanation:

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