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Dominik [7]
3 years ago
8

How will nuclear fusion change as the sun ages?

Chemistry
1 answer:
Marat540 [252]3 years ago
3 0

Answer:

It won't be good.

Explanation:

In the core of the sun, hydrogen is produced by nuclear fusion. when the sun ages, it starts to run out of the hydrogen. when it runs out, nuclear fusion can't generate heat, and then the sun expands, becoming a red giant.

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Which statements correctly describe the human skeletal system?
zhenek [66]

Answer:

A

Explanation:

Well, the human skeletal system produce red blood cells into and for the body.

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3 years ago
What is the answer ?
iragen [17]

Answer:

wire A is longer and thinner then wire B.

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5 0
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Arrange the three common unit cells in order from least dense to most dense packing. a. face-centered cubic < body-centered c
maks197457 [2]

Answer:

b. primitive cubic < body-centered cubic < face-centered cubic  

Explanation:

The coordination number is defined as <em>the number of atoms (or ions) surrounding an atom (or ion) in a crystal lattice</em>. Its value gives us a measure of how tightly the spheres are packed together. The larger the coordination number, the closer the spheres are to each other.

  • In the <u>primitive cubic</u>, each sphere is in contact with 6 spheres, so its <u>coordination number is 6</u>.
  • In the <u>body-centered cubic</u>, each sphere is in contact with 8 spheres, so its <u>coordination number is 12</u>.
  • In the <u>face-centered cubic</u>, each sphere is in contact with 12 spheres, so its <u>coordination number is 12</u>.

Therefore, the increasing order in density is the primitive cubic first, then the body-centered cubic, and finally the face-centered cubic.

3 0
3 years ago
How do decomposers interact with producers and consumers in an ecosystem
fenix001 [56]
Best Answer: producers use nutrients in the soil > consumers eat the producers, obtaining the energy and nutrients that the plant took > the consumer dies and is decomposed by a decomposer (usually decomposing bacteria), which replaces the nutrients back into the soil > producers use the nutrients in the soil.

now put that into your own words; if you cant, try drawing pictures to help you :) that might help you revise too, but remember to add info underneath, otherwise you might not understand it when you come back to it later
7 0
3 years ago
Automobile airbags contain solid sodium azide, NaN 3 , that reacts to produce nitrogen gas when heated, thus inflating the bag.
Yuri [45]

<u>Answer:</u> The value of work for the system is -935.23 J

<u>Explanation:</u>

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

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

Given mass of sodium azide = 16.5 g

Molar mass of sodium azide = 65 g/mol

Putting values in above equation, we get:

\text{Moles of sodium azide}=\frac{16.5g}{65g/mol}=0.254mol

The given chemical equation follows:

2NaN_3(s)\rightarrow 2Na(s)+3N_2(g)

By Stoichiometry of the reaction:

2 moles of sodium azide produces 3 moles of nitrogen gas

So, 0.254 moles of sodium azide will produce = \frac{3}{2}\times 0.254=0.381mol of nitrogen gas

To calculate volume of the gas given, we use the equation given by ideal gas, which follows:

PV=nRT

where,

P = pressure of the gas = 1.00 atm

V = Volume of the gas = ?

T = Temperature of the gas = 22^oC=[22+273]K=295K

R = Gas constant = 0.0821\text{ L. atm }mol^{-1}K^{-1}

n = number of moles of nitrogen gas = 0.381 moles

Putting values in above equation, we get:

1.00atm\times V=0.381mol\times 0.0821\text{ L atm }mol^{-1}K^{-1}\times 295K\\\\V=\frac{0.381\times 0.0821\times 295}{1.00}=9.23L

To calculate the work done for expansion, we use the equation:

W=-P\Delta V

We are given:

P = pressure of the system = 1atm=1.01325\times 10^5Pa     (Conversion factor:  1 atm = 101325 Pa)

\Delta V = change in volume = 9.23L=9.23\times 10^{-3}m^3     (Conversion factor:  1m^3=1000L )

Putting values in above equation, we get:

W=-1.01325\times 10^5Pa\times 9.23\times 10^{-3}m^3\\\\W=-935.23J

Hence, the value of work for the system is -935.23 J

7 0
4 years ago
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