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Len [333]
3 years ago
5

What is the middle layer of earth called

Physics
2 answers:
irinina [24]3 years ago
6 0
The middle or centre of the Earth is the core. However the middle of the layers from the surface to the centre of the Earth is known as mantle. 
tamaranim1 [39]3 years ago
5 0
The core is a firey part in the middle of the earths center
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Una grúa eleva un tubo de concreto de
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Explanation:

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7 0
3 years ago
Write the importance of international bureau of weights and measurement.​
Taya2010 [7]

Answer:

The importance of international bureau of weights and measures are;

1. to bring unification of measurement system.

2. to establish and preserve fundamental international prototypes.

3. to verify national standards, etc.

8 0
3 years ago
Which part of the central nervous system controls reflexes?
larisa86 [58]

Answer:

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6 0
3 years ago
Read 2 more answers
Two people stand across from one another at the top edges of identical buildings, 50 meters above the ground. One person throws
cricket20 [7]

Answer:

C

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6 0
3 years ago
Calculate the number of electrons in a small, electrically neutral silver pin that has a mass of 7.1 g. Silver has 47 electrons
Assoli18 [71]

<u>Answer:</u> The number of electrons in given amount of silver are 1.87\times 10^{24}

<u>Explanation:</u>

To calculate the number of moles, we use the equation:

\text{Number of moles}=\frac{\text{Given mass}}{\text{Molar mass}}

We are given:

Given mass of silver = 7.1 g

Molar mass of silver = 107.87 g/mol

Putting values in above equation, we get:

\text{Moles of silver}=\frac{7.1g}{107.87g/mol}=0.066mol

Number of electrons in 1 atom of silver = 47

According to mole concept:

1 mole of an element contains 6.022\times 10^{23} number of particles

So, 0.066 moles of silver will contain = -(0.066\times 47\times 6.022\times 10^{23})=1.87\times 10^{24} number of electrons

Hence, the number of electrons in given amount of silver are 1.87\times 10^{24}

7 0
3 years ago
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