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Mamont248 [21]
3 years ago
5

Ions that are present before and after a neutralization reaction are

Chemistry
1 answer:
VikaD [51]3 years ago
8 0

Answer:

spectator ions

Explanation:

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two factors that determine wether a molecule is polar are the types of atoms in the molecule and the ____ of the molecule
kolezko [41]

Answer:

Shape

Explanation:

Two factors that determine wether a molecule is polar are the types of atoms in the molecule and the <u>shape</u> of molecule.

Shape and polarity determine which type of compounds is.

if the shape of molecule is symmetric it will non polar. And it will dissolve in non polar solvent. The polar molecules are trigonal in shape.

Sodium chloride is ionic compound. The electronegativity of chlorine is 3.16 and for sodium is 0.93. There is large difference is present. That's why electron from sodium is transfer to the chlorine. Sodium becomes positive and chlorine becomes negative ion and compound is polar.

The compound having ionic bonds generally have moderate to high boiling points and melting point because of greater electrostatic interaction. Their electrical conductivity are high and these minerals tend to dissolve in water.

Covalent bond:

It is formed by the sharing of electron pair between bonded atoms.  

The atom with larger electronegativity attract the electron pair more towards it self and becomes partial negative while the other atom becomes partial positive and compound will polar.

For example:

In water the electronegativity of oxygen is 3.44 and hydrogen is 2.2. That's why electron pair attracted more towards oxygen, thus oxygen becomes partial negative and hydrogen becomes partial positive.

If the ectronegativity difference is 0.4 or less than this the compound will be non polar covalent compound and will behave different from polar compound.

5 0
3 years ago
In a candy factory, the nutty chocolate bars contain 25.0 % pecans by mass. If 5.0 kg of pecans were used for candy last Tuesday
erastovalidia [21]
20.0 kg of nutty chocolate bars were made.


5 0
3 years ago
According to Hund's Rule, if you were filling the three orbitals at the 2p energy level, you would first put an electron in the
GenaCL600 [577]

Answer:

True.

Explanation:

The Hund's Rule states that all orbitals must be singled occupied before any orbital is doubly occupied, and all the electrons at the singly occupied orbitals have the same spin number. By doing that, the electrons filled the lowest energy orbitals first.

The 2p level has 3 orbitals: 2px, 2py, and 2pz. So, when filling it, first put an electron in the 2px, then in the 2py, then and the 2pz (all with the same spin). After that, the remains electrons can be paired up.

5 0
3 years ago
Magnesium sulfate heptahydrate is heated until all the water is driven off. The sample loses 11.80 grams upon heating. What was
iren [92.7K]
Hello!

The initial mass of Magnesium Sulfate Heptahydrate (MgSO₄·7H₂O) is 23,08 g

The chemical reaction for the dehydrating of Magnesium Sulfate Heptahydrate (MgSO₄·7H₂O) is the following:

MgSO₄·7H₂O(s) + Δ → MgSO₄(s) + 7H₂O(g)

We know that the sample loses 11,80 g upon heating. That mass is the mass of Water that is released as vapor. Knowing that piece of information, we can apply the following conversion factor to go from the mass of water to the moles of water and back to the mass of the original compound (mi).

mi=11,80gH_2O* \frac{1 mol H_2O}{18gH_2O}* \frac{1molMgSO_4.7H_2O}{7molH_2O}* \frac{246,47 g MgSO_4.7H_2O}{1 mol MgSO_4.7H_2O}  \\  \\ mi=23,08gMgSO_4.7H_2O

Have a nice day!

6 0
3 years ago
Desclony When Fe(NO3)2 dissolves in water, what particles are present in the solution?​
Hitman42 [59]

Answer:

hjfhgjgjgjghgjgjhgjhhjh

3 0
3 years ago
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