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3 years ago

All scientists try to base their conclusions on _____.

Chemistry

2 answers:

ioda3 years ago

5 0

Answer : Option B) Data and measurements.

Explanation : All scientists try to base their conclusions based on data and measurements obtained from the experiments.

Scientist conduct experiments and record the observations, results and conclusions. They maintain a set of data of all the measurements that is obtained from the experiments.

crimeas [40]3 years ago

4 0

They try to base their conclusions off of data and measurements of which they should record from conducting experiments

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Give the name of reaction in the preparation of alkene from alcohol compounds.

pickupchik [31]

Dehydration to alkenes!

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3 years ago

If the symbol X represents a central atom, Y represents outer atoms, and Z represents lone pairs on the central atom, the struct

Inessa05 [86]

Answer:

The correct option is: bent 109°

Explanation:

Covalent molecules are the molecules in which the atoms are linked by covalent bonds. The electrons involved in the formation of a covalent bond are known as shared pair or bond pair of electrons.

The three-dimensional arrangement of the atoms of a molecule in space is known its molecular structure or geometry.

Given molecule: XY₂, having two lone pairs around the central atom X.

Since the molecule XY₂ has two lone pairs and two bond pairs of electrons. Therefore according to the VSEPR theory, the given molecule has a bent molecular geometry with 109° bond angle.

7 0

4 years ago

The difference between the initial (first) position and the final position of an object

Anna [14]

It is called DISPLACEMENT of the object....

3 0

4 years ago

6. The gas in a steel cylinder is at 55 °C and a pressure of 965 mmHg. What would be the temperature,

ohaa [14]

Answer:

91.4°C

Explanation:

Gay - Lussac Law => T ∝ P => T = kP => k = T/P with volume (V) and mass (n) constant.

For two different Temperature (T)-Pressure (P) conditions

k₁ = k₂ => T₁/P₁ = T₂/P₂ => T₂ = T₁(P₂/P₁)

T₁ = 55°C = (55 + 273)K = 328K

P₁ = 965 mmHg

T₂ = ?

P₂ = 850 mmHg

T₂ = T₁(P₂/P₁) = 328K(850 mmHg/965 mmHg) = 364K = (364 - 273)°C = 91.4°C

6 0

3 years ago

A certain AB4 molecule has a square-planar molecular geometry.

harina [27]

Answer: b). The B−A−B angles between neighboring B atoms are 90∘.

Explanation: The square planar geometry is the geometry in which the four groups are connected through an angle of 90∘ and all 5 atoms are in one plane.

It is not necessary for the molecule to have two non bonding pair of electrons on atom A but if it does have , then its parent geometry will be distorted octahedral. And if it doesn't have this non bonding pair of electrons then the geometry would be the square planar.

Thus the molecule has four electron domains about the central atom A if the parent geometry is square planar otherwise it would have 8 electron domain in distorted octahedral geometry.

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3 years ago