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Solnce55 [7]
3 years ago
9

A. Which of the following chemical formulas are incorrect? Select all that apply.

Chemistry
1 answer:
alexandr1967 [171]3 years ago
6 0

Answer:

The answer to your question is:

Explanation:

Formulas given            Status                  Correct formulas

NaO₂                             Incorrect                  Na₂O

RbCl                              Correct        

K₂S                                Correct

Al₂Cl₃                            Incorrect                 AlCl₃

MgP₂                            Incorrect                Mg₃P₂

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What is the significant digit in 23.45
klio [65]
If you mean the number of Significant Figures/Digits in 23.45, it would be 4. This is because every single non-zero digit is counted as a significant figure
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2 years ago
What are the similarities and differences for the properties of copper (II) sulphate and copper?
ivann1987 [24]

It is to do with the ionisation of the atom. Copper is a metal, so it will lose electrons. When reacted with a non-metal, it will form an ionic bond.

In copper (I) sulphate, the copper ions have a charge of +1, ie they have lost ONE electron each.

Copper (I) sulphate has the chemical formula Cu2SO4. Each ionic bond involves two Cu+1 ions and a sulphate ion (SO4.

In copper (II) sulphate, the copper ions have a charge of +2, ie they have lost TWO electrons each.

Copper (II) sulphate has the chemical formula CuSO4. Each ionic bond involves a single Cu+2 ion and a sulphate ion (SO4).

So, really, it’s down to the chemical structure and the ionisation of the atom. Apart from the chemistry, copper (I) sulphate a very obscure chemical. Although, after a bit of googling, I have managed to find some info and vendors, it appears that this chemical is rarely seen and doesn’t have many practical uses.

Copper (II) sulphate, on the other hand, is incredibly common. It’s in every school chemistry lab. If someone says “copper sulphate” they will be talking about this chemical, not copper (I) sulphate. In pure form, it is a boring white powder, but when hydrated, it takes on it’s better known blue colour, with blue crystals and blue solution.

Hope this helps.

3 0
2 years ago
More people in Australia have skin that is easily damaged by sunlight?
RSB [31]
I think it is true because the sun rays
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3 years ago
PLZ HELP ASAP, thanks :)
Basile [38]

Answer:

2. \displaystyle S\:waves\:are\:also\:called\:secondary\:waves.

1. \displaystyle Ritcher\:scale

Explanation:

2. <em>Seismic</em> <em>waves</em> vibrate from side to side and up and down. They go through solids only, travel slower than <em>Pressure</em> [or <em>Primary</em>] <em>waves</em>, which arrive second, and shake the ground violently.

1. A <em>Ritcher</em><em> </em><em>scale</em><em> </em>senses the magnitude of earthquakes.

I am joyous to assist you anytime.

8 0
3 years ago
Number 7
lukranit [14]

Answer:

it's a metal (c)

Explanation:

it's a alkali metal basically considered a metal

8 0
3 years ago
Read 2 more answers
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