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fredd [130]
2 years ago
9

Name an element that has the same number of electron energy levels as Calcium (Ca)?

Chemistry
1 answer:
Lerok [7]2 years ago
6 0

Answer:

aluminum?

Explanation:

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Which law states that the entropy of the universe is always increasing?
vova2212 [387]

Second law of thermodynamics states entropy of the universe is always increasing. entropy always increases in a spontaneous process .

option B) second law of thermodynamics

for example if we keep a hot cup of coffee the heat is lost to surrounding and entropy( randomness increases) since it is a natural process entropy of universe increases.

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Why can you never see the far side of the mood from earth?
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The answer is C, because the moon does rotate it just rotates at the perfect time for us to never side the other side of it.  
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Examination of a cell by transmission electron microscopy reveals a high density of ribosomes in the cytoplasm. This observation
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Answer:

The answer is the B. Proteins

Explanation:

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2 years ago
The following steps refer to various stages in transmission at a chemical synapse. 1. Neurotransmitter binds with receptors asso
Furkat [3]

Answer:

3,2,5,1,4

Explanation:

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I hope you find this information useful and interesting! Good luck!

7 0
3 years ago
The density of air under ordinary conditions at 25°C is 1.19 g/L. How many kilograms of air are in a room that measures 10.0 ft
Lunna [17]

Answer: The mass of air present in the room is 37.068 kg

Explanation :  Given,

Length of the room = 10.0 ft

Breadth of the room = 11.0 ft

Height of the room = 10.0 ft

To calculate the volume of the room by using the formula of volume of cuboid, we use the equation:

V=lbh

where,

V = volume of the room

l = length of the room

b = breadth of the room

h = height of of the room

Putting values in above equation, we get:

V=10.0ft\times 11.0ft\times 10.0ft=1100ft^3=31148.53L

Conversion used : 1ft^3=28.3168L

Now we have to calculate the mass of air in the room.

Density=\frac{Mass}{Volume}

1.19g/L=\frac{Mass}{31148.53L}

Mass=37066.7507g=37.068kg

Conversion used : (1 kg = 1000 g)

Therefore, the mass of air present in the room is 37.068 kg

3 0
3 years ago
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