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KiRa [710]
3 years ago
10

100 points! Report on an element

Chemistry
2 answers:
AnnyKZ [126]3 years ago
7 0

Gold.

AU

79

Atomic mass 196.96...

Metal

Anglo Saxon

Group number 11

Golf is used for money or jewelry

It is natural found in caves

Gold is valuable and beautiful

Hope this helps!

Luden [163]3 years ago
6 0

Hydrogen  H weight: 81

Non-metal

Hydrogen is the simplest element; an atom consists of only one proton and one electron. It is also the most plentiful element in the universe. Despite its simplicity and abundance, hydrogen doesn't occur naturally as a gas on the Earth--it is always combined with other elements.

period 1 group 1

Hydrogen is easily the most abundant element in the universe. It is found in the sun and most of the stars, and the planet Jupiter is composed mostly of hydrogen. On Earth, hydrogen is found in the greatest quantities as water.

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Read 2 more answers
What property of matter does not change even though the appearance may change?
IceJOKER [234]

Answer:

The law of the conservation of mass states that matter is neither created nor destroyed, only converted to other forms. Therefore, the mass never changes, even if its appearance does.

Explanation:

4 0
3 years ago
write a balanced chemical equation for each single replacement reaction that takes place in aqueous solution. write no reaction
Illusion [34]

The question is incomplete, here is the complete question:

Write a balanced chemical equation for each single replacement reaction that takes place in aqueous solution. write no reaction if a reaction does not occur

1.) Zn + PbCl₂

2.) Cu + Fe(NO₃)₂

<u>Answer:</u>

<u>For 1:</u> The reaction does occur.

<u>For 2:</u> The reaction does not occur.

<u>Explanation:</u>

Single displacement reaction is defined as the reaction in which more reactive element displaces a less reactive element.

The reactivity of metal is determined by a series known as reactivity series. The metals lying above in the series are more reactive than the metals which lie below in the series.

A+BC\rightarrow AC+B

For the given options:

  • <u>For 1:</u>

Zinc is more reactive than lead as it lies above in the series. So, it will displace lead from its chemical equation.

The chemical equation for the reaction of zinc and lead chloride follows:

Zn+PbCl_2\rightarrow ZnCl_2+Pb

  • <u>For 2:</u>

Copper is less reactive than iron as it lies below in the series. So, it will not displace iron from its chemical equation.

The chemical equation for the reaction of copper and iron (II) nitrate follows:

Cu+Fe(NO_3)_2\rightarrow \text{No reaction}

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Carbon or Fleuronie?

Explanation:

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