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Vlada [557]
3 years ago
6

Is iron (Fe) an ion? Name examples of ions. ​

Chemistry
1 answer:
Rudik [331]3 years ago
5 0

Answer:

yes Iron consists of iron atoms. Like all other atoms these are made up of a nucleus and electrons. If an iron atom gains or loses electrons it will become an ion. ... Neither does it make sense to say "iron is an ion", iron atoms can be ions, or part of ions

Explanation:

Aluminum - Al 3+

Barium - Ba 2+

Bismuth - Bi 3+

Cadmium - Cd 2+

Calcium - Ca 2+

Cesium - Cs +

Chromium (III) - Cr 3+

Cobalt - Co 2+

Copper (I) - Cu +

Copper (II) - Cu 2+

Hydrogen - H +

Iron (II) - Fe 2+

Iron (III) - Fe 3+

Lead (II) - Pb 2+

Lithium - Li +

Magnesium - Mg 2+

Mercury (I) - Hg2 2+

Mercury (II) - Hg 2+

Nickel - Ni 2+

Potassium - K +

Rubidium - Rb +

Silver - Ag +

Sodium - Na +

Strontium - Sr 2+

Tin (II) - Sn 2+

Zinc - Zn 2+

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Answer:

Populations have genetic variation.

The environment changes.

Organisms must have specific traits in order to survive and reproduce.

Explanation:

Natural selection provides an advantage during an adverse condition for organisms that have a rich genetic variation in their population.

Also, environmental changes induced natural selection whereby organisms must adapt to changes around them.

For organisms to survive, they must have specific traits that gives them a competitive reproductive advantage.

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2 years ago
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Motion is a change in an object​
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Explanation:

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Which two elements have similar physical and chemical properties?
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Explanation:

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5 0
2 years ago
A penny has a mass of 2.50g and the Moon has a mass of ×7.351022kg, How many moles of pennies have a mass equal to the mass of t
baherus [9]
Answer: 122 moles

Procedure:

1) Convert all the units to the same unit

2) mass of a penny = 2.50 g

3) mass of the Moon = 7.35 * 10^22 kg (I had to arrage your numbers because it was wrong).

=> 7.35 * 10^22 kg * 1000 g / kg = 7.35 * 10^ 25 g.

4) find how many times the mass of a penny is contained in the mass of the Moon.

You have to divide the mass of the Moon by the mass of a penny

7.35 * 10^ 25 g / 2.50 g = 2.94 * 10^25 pennies

That means that 2.94 * 10^ 25 pennies have the mass of the Moon, which you can check by mulitiplying the mass of one penny times the number ob pennies: 2.50 g * 2.94 * 10^25 = 7.35 * 10^25.

5) Convert the number of pennies into mole unit. That is using Avogadros's number: 6.022 * 10^ 23

7.35 * 10^ 25 penny * 1 mol / (6.022 * 10^ 23 penny) = 1.22* 10^ 2 mole = 122 mol.

Answer: 122 mol
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Write out the word equations for these reactions.<br> ) Hydrogen reacts with oxygen to form water.
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Answer:

H2O

Explanation:

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