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BabaBlast [244]
3 years ago
10

What country used the most energy in world during both 1990 and 2003?

Chemistry
1 answer:
rjkz [21]3 years ago
3 0

Answer:canada

Explanation:

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Which equation shows how to calculate how many grams (g) of Mg(OH)2 would be produced from 4mol KOH? The balanced reaction is:
Simora [160]

Answer:

4 mol of KOH would produce 116.6 g of Mg(OH)₂

Explanation:

According to the following balanced equation:

  • MgCl₂+ 2 KOH -----> Mg(OH)₂ + 2 KCL

One can note that 2 mol of KOH react with MgCl₂ to produce 1 mol of Mg(OH)₂.

using cross multiplication  

2 mol of KOH → 1 mol of Mg(OH)₂.

4 mol of KOH → ?? mol of Mg(OH)₂.

no of moles of  Mg(OH)₂ = (1 mol* 4 mol) / 2 mol =2 mol

Now we can convert moles of  Mg(OH)₂ to grams using the formula

mass of Mg(OH)₂= (no. of moles * molar mass) = (2 mol * 58.3g/mol) = 116.6 g

  • So, 4 mol of KOH would produce 116.6 g of Mg(OH)₂.
6 0
4 years ago
Explain interaction between sun system and hydrosphere
qwelly [4]

Both the Sun and the Earth are sources of heat that power an interconnected set of dynamic systems (lithosphere, hydrosphere & cryosphere, atmosphere, biosphere).

Within the Sun, heat is transferred by radiation and convection, which involves circulation of hydrogen ions. Within the Earth heat is transferred by conduction and convection, which involves circulation of silicates in the mantle and the crust, and by the circulation of iron in the liquid outer core. On the surface of the Earth and the atmosphere, heat emanating largely from the Sun is transferred by convection, which involving the circulation of water and carbon. Both the Sun and the Earth and their atmospheres are layered. Both systems evolve and change.

 

6 0
4 years ago
Select the correct answer.
AveGali [126]

Answer: your answers are between d or b

Explanation:

6 0
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The further away from the sun a planet is, the hotter it is. <br><br> True<br> False
a_sh-v [17]

Answer:

False

Explanation:

The farther away a planet is, the colder it is.

7 0
3 years ago
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What has mass and takes up space?
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Matter buddy, ur welcome :)
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3 years ago
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