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bonufazy [111]
3 years ago
11

Which of the following is an example of a chemical change?

Chemistry
2 answers:
CaHeK987 [17]3 years ago
7 0
The answer would most likely be A
galben [10]3 years ago
5 0
The answer will most likely be A: water evaporating from a puddle on a hot day. When water evaporates, it turns into vapor.
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Which factor is a characteristic of an acid?
Elina [12.6K]

anything that turns red litmus paper to blue it is an acid and vice versa is true

4 0
3 years ago
Give the hybridization for the br in bro4⁻.
elixir [45]

The hybridization for the Br in BrO4⁻ is sp^{3}. So, the correct option is (e).

In chemistry, the idea of combining atomic orbitals to create new hybrid orbitals (with different energies, shapes, etc., than the component atomic orbitals) is known as orbital hybridisation (or hybridization). These new hybrid orbitals are suitable for the pairing of electrons to form chemical bonds in valence bond theory.

Because more directional hybridised orbitals result in higher overlap when creating bonds, stronger bonds are formed, which favours the hybridization of orbitals. When hybridization takes place, this leads to more stable molecules.

One s orbital and three p orbitals combine to form four sp^{3} orbitals, each of which has a 25% s character and a 75% p character. This process is known as sp^{3} hybridization. Anytime an atom is surrounded by four groups of electrons, this kind of hybridization is necessary.

Learn more about hybridization here:

brainly.com/question/12207339

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8 0
1 year ago
A friend asks you to help them decide which crackers are healthier. Comparing approximately equal serving sizes of 1 cracker (ap
Readme [11.4K]

Answer:

The correct option is "Triscsuit"

Explanation:

In my opinion the correct option is tricsuit, because it has 0% saturated fat and TRANS fat, which is healthy fats since these fats are the worst for our body.

They also contain sodium but their levels are not high enough to trigger hypertension.

8 0
3 years ago
In a be atom a 1s electron has a greater zeff than a 2s electron true or false
Degger [83]
Edrtfyguhiopobhoirhbvw ;iuerjvnwikrjhvn;owjber;ovqjbiufvjbwneri;uqhuoerhjnvhjiurvnwierujvbkqer.jbvliqukjrbvg
7 0
3 years ago
Calculate the number of atoms in 0.0340 g Zn.
Murljashka [212]

Answer:

moles Hg = 25.8 / 200.59 = 0.129

atoms = 0.129 x 6.02 x 10^23 =7.74 x 10^22

Moles Zn = 0.0340 / 65.39 =0.000520

atoms = 3.13 x 10^20

work in the same way : divide the mass by the molar mass and multiply by 6.02 x 10^23

Explanation:

3 0
2 years ago
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