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qwelly [4]
2 years ago
7

Why does ice float on water?

Chemistry
2 answers:
Anni [7]2 years ago
5 0
Ice is less dese than water
wolverine [178]2 years ago
5 0
Because of its density compared to the water’s.
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How do plants convert glucose to energy?
hram777 [196]

Answer:

Cellular Respiration

Explanation:

Plants convert glucose to energy through a thing called cellular respiration. This process is when glucose + oxygen in the precenses of sunlight = carbon dioxide, water, and ATP(energy for the cells)

3 0
1 year ago
7. How many significant figures are in the following numbers?
Vlad1618 [11]
There are
A. 6 significant figures
B.5 sig figs
C.2 sig figs
D.5 sig figs
7 0
3 years ago
Consider the following enthalpy diagram and enthalpies of intermediate and overall chemical reactions.
SashulF [63]

Answer: The overall chemical reaction is exothermic is the correct statement.

Explanation: As seen from the given image, the reactants are at higher energy level and products are at lower energy level and the excess energy is released in the form of heat. These reactions are considered as exothermic reactions.

Hence, the reaction given in the image is an exothermic reaction.

6 0
2 years ago
Read 2 more answers
Carbon dioxide in the oceans is affecting its pH.<br><br> a. True<br> b. False
monitta
Its true it affects the pH balance
7 0
2 years ago
Entropy means that _________.A. the quantity of usable energy declines with each transformationB. energy can be neither created
son4ous [18]

Answer:

answer A

Explanation:

A) the quantity of usable energy declines with each transformation → True . Since the entropy increases , the amount of energy that can not be converted to useful energy increases and since the total amount of energy is conserved, the quantity of useful energy decreases.

B) energy can be neither created nor destroyed → False in the context of entropy , since the energy is conserved regardless of the changes in entropy (First law → conservation of energy vs second law → increase of entropy)

C)  life should be impossible → False . Since the second law states that the entropy of the <u>universe </u>increases with time . Then the system (life) can experience a decrease in entropy  at the expense of a larger increase in entropy of the surroundings ( so the net increase is positive)

D) it is not possible to observe an increase in molecular organisation → False . Same as C. A system  can experience a decrease in entropy at the expense of a larger increase in entropy of the surroundings ( so the net increase is positive)

7 0
3 years ago
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