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shtirl [24]
2 years ago
9

Pls help I am on a timer...

Biology
1 answer:
elena55 [62]2 years ago
5 0

Answer:

C

Explanation:

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Please I would like some help. Will give brainliest for correct answer.
zheka24 [161]

Answer

D

Explanation

The conservation of mass principle says that whatever you do to a chemical, the mass of the reactants must equal the mass of the products.

There is a loss somewhere that has not been accounted for.The ribbon and oxygen add up to 6.95 which means that the reactants (oxygen and Magnesium ribbon) added up to more than the mass of the product.

The product was only 6.53 grams. Why that  is so is another matter and how they measured the oxygen is still yet something else.

A is wrong. The mass of Mg was measured, it was not calculated.

B is wrong.  The experiment really depends on moles not raw mass (which is measured and then converted to mass.)

C is wrong. They are not equal. The products are a little less than the mass of the reactants added together. They do not differ by much, but they do differ.

6 0
3 years ago
A group of mice becomes separated by the formation of a river. Over time, the northern mice became smaller and whiter, while the
Mariulka [41]
Genetic variation

Your welcome
3 0
3 years ago
Which of the following is true regarding extinction? 
Maurinko [17]
<span>C. Single events or several causes working together to produce extinction in a short period is referred to as mass extinction.

Example:
</span>Destruction of forests, mountains, and bodies of water to satisfy human needs result to the imbalance of nature which also give rise to global warming.

<span>Animals and plants have lost their habitats. They lost their means to live. They lost their food sources and they suffer and die because of humans irresponsible acts.</span>

5 0
3 years ago
luis is given a can of soda. it had a mass of 21 grams and a volume if 7cm cubed what is the densityof the soda?
alexandr1967 [171]
62300 gram
hope this helps :)
7 0
3 years ago
Read 2 more answers
The cut off part says happening​
BigorU [14]
The correct answer is C
3 0
3 years ago
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