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Mashcka [7]
3 years ago
9

Help pls quickly!!!!!

Chemistry
1 answer:
Svetradugi [14.3K]3 years ago
7 0
B is remaining the constant speed for 4 mins
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Why can't chemical changes be undone? Because of the chemical properties. Because Mark is an idiot. Because they need energy. Be
Volgvan

Answer: Because new substances are formed.

Explanation: A chemical property is any of a material's properties that becomes evident during, or after, a chemical reaction; that is, any quality that can be established only by changing a substance's chemical identity.  Once a chemical change occurs it cannot be undone due to the change in chemical identity.  The creation of a new substance is not reversible.  

8 0
3 years ago
Calculate the mass of water produced by metabolism 84.0 g of glucose
scoundrel [369]

The amount of water that will be produced is 50.36 grams

<h3>Stoichiometric problems</h3>

The metabolism of glucose is represented by the following equation:

C_6H_1_2O_6(s)+6O_2(g)--- > 6CO_2(g)+6H_2O(g)

The mole ratio of glucose metabolized to the water produced is 1:6.

Mole of 84.0 g glucose = 84/180.156 = 0.4662 moles

Equivalent mole of water = 0.4662 x 6 = 2.7975 moles

Mass of 2.7975 moles water = 2.7975 x 18 = 50.36 grams

More on stoichiometric problems can be found here: brainly.com/question/14465605

#SPJ1

8 0
2 years ago
How did your estimated poputation size<br> compare with the actual population size
musickatia [10]

Answer:

Hope this helps

Explanation:

https://seagrant.whoi.edu/wp-content/uploads/2018/05/ESTIMATING-POPULATION-SIZE-1.pdf

8 0
3 years ago
Read 2 more answers
What electrically neutral atom will have an electron configuration of 1s2 2s2 2p4?
abruzzese [7]

Answer:- oxygen.

Explanations:- The electronic configuration is given and we are asked to figure out the electrically neutral atom that will have the electron configuration, 1s^22s^22p^4 .

The sum of electrons for this electron configuration is 8. If we look at the periodic table then 8 is the atomic number of oxygen.

So, the electrically neutral atom for the given electron configuration is oxygen.

6 0
3 years ago
Is gamma rays blocked very easily
Leto [7]
No, since they are the strongest type of ray only elements that are dense can block them.
5 0
4 years ago
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