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Y_Kistochka [10]
3 years ago
7

Chemical and physical properties of calcite​

Chemistry
1 answer:
Semenov [28]3 years ago
7 0

Answer:

Chemical Classification Carbonate

Explanation:

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Which group of the periodic table contains two elements that are gases at stp?
Svetradugi [14.3K]
The group is might be labeled as VIIB or VIIA.
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Why do all the elements in Group 16 share similar properties?
geniusboy [140]
D. They all have the same number of valence electrons.
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How do moss leaves and fish differ? How are they the same?
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3 years ago
The statement "electrons have a negative charge" is true. Select the correct evidence scientist have that proves this statement
Kryger [21]

The question is incomplete but i will try to offer as much help as i can.

Answer:

See explanation

Explanation:

The electron was discovered by J.J Thompson. His model of the atom was called the plum-pudding model of the atom.

He discovered that cathode rays being negatively charged particles were deflected by a magnet in just the same way as moving, negative electrically charged particles.

Similarly, in an electric field, they are deflected towards the positive plate of the electrostatic field which shows that they are negatively charged.

3 0
3 years ago
The poisonous gas hydrogen sulfide, H2S, can be neutralized with a base such as sodium hydroxide,
mariarad [96]

Answer:

It's not correct. For balancing, we need to put the coefficients in the molecule, not in the athom. Because if you do this, you're creating another molecule, instead of a balacing, for which the reaction may not happen - but anyway, it would be another reaction.

The correct balacing is:

2NaOH + 1H2S → 1Na2S + 2H2O

Explanation:

Look: Na2OH does not even exist. OH has only one free link, so he can't - in normal conditions - make another one with any athom. That's why we should write 2NaOH instead of Na2OH. The first means "2 mols of NaOH".

4 0
3 years ago
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