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DerKrebs [107]
3 years ago
9

Copper is a metal that is used for many purposes. It is mined from the earth using various methods. Though the amount of copper

in the Earth's crust is very large, if the mining of copper continues, it will eventually run out.
All BUT one method listed below will help conserve the world copper supply. Which method might actually increase copper mining?
A) a plan to collect copper bound for landfills and recycling it instead
B) the development of a cheaper and more efficient way to mine for copper
C) development of a material that could serve as a substitute for copper wiring
D) the use of other metals to replace the copper normally found in electric motors
Chemistry
2 answers:
zhuklara [117]3 years ago
8 0

Answer:

The answer is B

Explanation:

otez555 [7]3 years ago
3 0

B is the answer my dude

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Which accurately describes nonmetals
Bumek [7]

Answer:

Most nonmetals are solids, but some are gaseous or liquid. All nonmetals are solid unless they bond with a metal.

Explanation:

ANSWER: LOOK IT UP IN YO DICtionary

                                         - williams got dem guns

8 0
2 years ago
Which chemical reaction needs more energy to break bonds in the reactants
MA_775_DIABLO [31]

Answer:An endothermic reaction

Explanation: In an endothermic reaction, it takes more energy to break the bonds of the reactants than is released when the bonds in the products are formed. In an endothermic reaction, the temperature goes down.

6 0
3 years ago
Read 2 more answers
When a compound donates (loses) electrons, that compound becomes oxidized. Such a compound is often referred to as an electron d
rjkz [21]

Assuming this is a true or false question, the answer would be True

3 0
2 years ago
Titanium dioxide (TiO2) is used extensively as a white pigment. It is produced from an ore that contains ilmenite (FeTiO3) and f
STALIN [3.7K]

Answer:

2928kg of ore are required.

2585kg of the 80% H₂SO₄ solution are required.

Explanation:

To solve this question we need first to find the moles of titanium in 1000kg of TiO₂. Keeping in mind the 89% of descomposition we can find the mass of the ore and the mass of the 80% sulfuric acid required:

<em>Moles TiO₂ -Molar mass: 79.866g/mol-:</em>

1x10⁶g * (1mol / 79.866g) = 12521 moles Titanium

In mass -Molar mass Ti: 47.867g/mol-:

12521 moles Titanium * (47.867g / mol) = 599341.4g of Ti.

As the ore contains 24.3% of Ti:

599341.4g of Ti = 599.34kg Ti * (100 / 24.3) = 2606kg ore

As the descomposition is just of 89%:

2606kg ore * (100 / 89) =

<h3>2928kg of ore are required</h3><h3 />

<em>Mass 80% sulfuric acid:</em>

12521 moles Titanium = 12521 moles H₂SO₄ * (100/89) = 14068.5 moles of H₂SO₄ are required.

In an excess of 50% =

14068.5 moles of H₂SO₄ are required * 1.5 = 21102.8 moles of H₂SO₄.

The mass is:

21102.8 moles of H₂SO₄ * (98g / mol) = 2068075g = 2068kg of sulfuric acid

That is in the 80%:

2068kg of sulfuric acid * (100/ 80) =

<h3>2585kg of the 80% H₂SO₄ solution are required</h3>
3 0
3 years ago
Please check if i did it right. did i put the right electric charge
Amiraneli [1.4K]
Yes it’s correct your answer connect with eachother I did this before
3 0
2 years ago
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