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dolphi86 [110]
4 years ago
9

The Mendeleev and Moseley periodic charts had

Chemistry
1 answer:
alisha [4.7K]4 years ago
8 0

Answer: The Moseley chart was based on using the atomic mnumber of the element, not the chemical properties. Because of the similarities between elements of the same period, this often created problems in establishing an order; Moseley's work enabled the change of the atomic number from an arbitrary selection to a definable property, measurable through experimentation.

Explanation:

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How are states of matter different at an atomic scale?
nalin [4]

Answer:

The bonds that exist between their atoms and molecules differ on an atomic scale.

Explanation:

The three basic states of matter are solid, liquid, and gas. The major difference between them is the strength of the bonds that hold their molecules together. This affects the way that the molecules interact with each other.

The intermolecular forces binding solids together are very strong. This makes solids rigid and not able to move about freely, but rather, only able to vibrate about a mean position.

The intermolecular forces binding liquid atoms together are a lot weaker than that of solids. This makes liquids able to flow.

The intermolecular forces binding gas molecules together are the weakest. As a result, the gases can move about freely and occupy no definite volume.

7 0
4 years ago
What is alchemy?
Naily [24]

Answer:  A. An early form of chemistry that people used to try to turn metal

into gold.

Explanation:

Alchemy is indeed an early form of chemistry in which people try to turn metal into gold.

6 0
4 years ago
Question 16 unsaved what is the density of a substance with a mass of 45.00 g and a volume of 26.4 ml?
NNADVOKAT [17]
Density=mass/volume
density=45/26.4
density=1.7g/ml
6 0
4 years ago
A sample of hydrogen gas has a volume of 10.0 liters at 95.0 kPa and 298 K. If temperature remains constant, what is the volume
pogonyaev

Answer: 9.38L

Explanation: V1 = 10L

P1 = 95.0 kPa

V2 =?

P2= 101.3kPa

P1V1 = P2V2

10 x 95 = 101.3 x V2

V2 = 950/101.3

V2 = 9.38L

3 0
4 years ago
Discuss why people use the scientific method
Lubov Fominskaja [6]

Answer:

They use the scientific method to study different aspects of how people think and behave. They also use the scientific method because it is evidence-based, standardized and objective in conducting experiments.

5 0
3 years ago
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