CHEMISTRY HIGH SCHOOL

Look at the chemicals listed below and answer the questions . ironwater
sand
oxygen
gold
carbon dioxide
helium
carbon
rust
seawater
1. Name the two metals
2.Name a gas that is not an element
3.Name a mixture
4.Name a non metallic element that is a solid .​

Answers

Answer 1
Answer:

Answer:

1. gold and rust

2. carbon dioxide

3. sea water

4. carbon
Answer 2
Answer:

Answer:

1. Gold and Iron

2. Helium

3. Seawater

4.Rust

Explanation:

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Answers

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What is the total number of electrons in a Cu+ ion?
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Answers

Answer: The number of electrons in Cu^+ ion is 28.

Explanation: Copper has atomic number of 29 which means it has 29 electrons and 29 protons.

Argon is the noble gas with 18 electrons.

Cu(29 -[Ar]3d^(10)4s^1

When Cu lose one electron it forms Cu^+ as now the number of protons are greater than the number of electrons.

The configuration of Cu^+ becomes [Ar]3d^(10)

The total number of electrons in a Cu+ ion is 28.

The Cu+ ion is an ion of copper with a +1 charge. The charge of the ion tells us the number of electrons gained or lost by the atom. Since the ion has a positive charge, it means that it has lost one electron.

The atomic number of copper (Cu) is 29, meaning that a neutral copper atom has 29 electrons. When a copper atom loses one electron to form the Cu+ ion, the total number of electrons in the ion is 29 - 1 = 28.

Learn more about Copper here:

brainly.com/question/33510394

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Answers

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Answers

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Answer:

The Table helps discover new elements.

Explanation:
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