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3 years ago

Of metals and nonmetals which tend to be positive ions

Chemistry

1 answer:

MA_775_DIABLO [31]3 years ago

5 0

Answer:

metal atoms lose electrons to form positive ions (cations)

Explanation:

metal atoms lose electrons to form positive ions (cations ) non-metal atoms gain electrons to form negative ions (anions )

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How long would it take to produce enough aluminum to make a case (24 cans) of aluminum soft drink cans if each can used 3 g of a

kozerog [31]

Answer : It takes time to produce 3 g of aluminium is, 165 seconds.

Explanation :

As we are given that the mass of aluminium is, 3 grams. Now we have to calculate the total mass of aluminum.

Total mass of aluminum = 3g × 24 = 72 g

Now we have to calculate the moles of aluminum.

$\text{Moles of Al}=\frac{\text{Mass of Al}}{\text{Molar mass of Al}}$

Molar mass of Al = 27 g/mol

$\text{Moles of Al}=\frac{72g}{27g/mol}=2.67mol$

As, 1 mole of Al has 3 Faradays

So, 2.67 mole of Al has = $2.67\times 3=80.1$ Faradays

and,

Charge = $80.1\text{ Faradays}\times \frac{96500\text{ coulombs}}{1\text{ Faradays}}=7.73\times 10^6\text{ coulombs}$

Current = $5.00\times 10^4A\times \frac{93.9}{100}=46950A$

Now we have to calculate the time.

$Time=\frac{Charge}{Current}=\frac{7.73\times 10^6}{46950}=164.6s\aaprox 165s$

Hence, it takes time to produce 3 g of aluminium is, 165 seconds.

5 0

3 years ago

The term "conservation of energy" means that the total amount of energy in a system isolated from the rest of the universe remai

il63 [147K]

Answer:

True

Explanation:

The first law of thermodynamics establishes a relationship between the internal energy of the system and the energy that it exchanges with the environment in the form of heat or work.

The first law of thermodynamics determines that the internal energy of a system increases when heat is transferred or work is done on it.

Like all the principles of thermodynamics, the first principle is based on systems in equilibrium.

On the other hand, it is likely that you have heard more than once that energy is neither created nor destroyed, only transformed. It is the general principle of energy conservation. Well, the first law of thermodynamics is the application to thermal processes of this principle.

The universe as a whole could be considered an isolated system, and therefore its total energy remains constant.

8 0

3 years ago

First twenty element with electronic configuration

balandron [24]

Hydrogen (H) 1s1
2 Helium (He) 1s2
3 Lithium (Li) [He] 2s1
4 Beryllium (Be) [He] 2s2
5 Boron (B) [He] 2s2 2p1
6 Carbon (C) [He] 2s2 2p2
7 Nitrogen (N) [He] 2s2 2p3
8 Oxygen (O) [He] 2s2 2p4
9 Fluorine (F) [He] 2s2 2p5
10 Neon (Ne) [He] 2s2 2p6
11 Sodium (Na) [Ne] 3s1
12 Magnesium (Mg) [Ne] 3s2
13 Aluminium (Al) [Ne] 3s2 3p1
14 Silicon (Si) [Ne] 3s2 3p2
15 Phosphorus (P) [Ne] 3s2 3p3
16 Sulphur (S) [Ne] 3s2 3p4
17 Chlorine (Cl) [Ne] 3s2 3p5
18 Argon (Ar) [Ne] 3s2 3p6
19 Potassium (K) [Ar] 4s1
20 calcium (ca) [Ar] 4s2

3 0

1 year ago

The SI unit of heat energy is British Thermal unit Joule all of the above Calorie

AnnyKZ [126]

I think the answer is Joule.

As an amount of energy (being transferred), the SI unit of heat is the joule (J).

7 0

3 years ago

How would being lactose intolerant affect someone who has galactosemia? It would make the effects of galactosemia more severe, b

lakkis [162]

Answer:

It would make the effects of galactosemia more severe, because more lactose would be metabolized.

Explanation:

Galactosemia is an autosomal recessive disorder. People with this order usually have no problem in the digestion of lactose or absorption of galactose.

People who are lactose intolerant must however avoid food with large amounts of lactose because they can’t digest or metabolize it though they are able to digest and metabolize galactose.

4 0

3 years ago

Of metals and nonmetals which tend to be positive ions​

Of metals and nonmetals which tend to be positive ions