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Kay [80]
3 years ago
10

In the cells of the human body,oxygen molecules are used directly in a process that

Chemistry
1 answer:
a_sh-v [17]3 years ago
6 0
<span>In the cells of the human body,oxygen molecules are used directly in a process that releases energy</span>
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Examples s name of thosse food items we can store for a month?​
choli [55]

Answer:

1. Nuts

2. Canned meats and seafood

3. Dried grains

4. Dark chocolate

5. Protein powders

3 0
3 years ago
Choose the number of significant figures indicated. 90
kvv77 [185]
There are 2 significant figures. All numbers in a whole number are significant.
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3 years ago
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What is the ∆G for the following reaction between O3 and O2? 3O2(g) 2O3(g) Given: O3: ∆H = 285.4 kJ ∆S = -137.14 J/K)
Natali [406]
We’ll be using the equation:
dG = dH - TdS (replace ‘d’ with triangle)

I’m going to assume 0 degrees Celsius.
At 0 C (273 K):

dG = dH - TdS
dG = (285,400 J) - (273 K)(-137.14 J/K)
dG = 285,400 J + 37,439.2 J
dG = 322,839.2 J or 322.84 kJ

The dG of this reaction is +322.84 kJ. This reaction is not considered spontaneous.

This answer, in this instance, would be D. If the temperature used in the question is not 0 degrees C, replace the temperature that I used for calculation with the Kelvin temperature given in the problem (K = C + 273), and simplify to find the answer.
6 0
3 years ago
Which is the electron configuration for bromine? 1s22s22p63s23p64s23d104p5 1s22s22p63s23p64s23d104p6 1s22s22p63s23p44s23d104p5 1
Svetach [21]

Answer : The correct option is, 1s^22s^22p^63s^23p^64s^23d^{10}4p^5

Explanation :

The given element bromine belongs to the group 17 and period 4. The symbol of bromine is, Br.

The atomic number of bromine = 35

The total number of electrons present in bromine element = 35

Electronic configuration : It is defined as the arrangement of electrons around the nucleus of an atom.

Hence, the correct electronic configuration of bromine is,

1s^22s^22p^63s^23p^64s^23d^{10}4p^5

8 0
3 years ago
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_______________________________: a type of observation which can be counted or measured, often using tools like a thermometer, a
Ber [7]

Answer:

<u>A Quantative Observation</u>: A type of observation which can be counted or measured, often using tools like a thermometer, a scale, or a ruler.

<u>Observation:</u> All the data collected during scientific investigations. It is best gathered by doing the investigation yourself, not reading other peoples’ work.

<u>Scientific Law</u>: a specific relationship under given conditions that tells what happens in the natural world. Based on a body of evidence, they are universal and will rarely if ever change.

<u>Scientific Theory</u>: a well-supported and widely accepted explanation of nature. They can and do change if new evidence arises.

I hope I got these right and I hope you got the help you wanted!

4 0
3 years ago
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