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Lana71 [14]
3 years ago
14

the model of the atom has change as scientists have gathered new evidence. four models of the atom are shown below, but one impo

rtant model is missing
Chemistry
1 answer:
Tresset [83]3 years ago
5 0
The answer for this question is (b) Dalton model
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Anna35 [415]

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The respiratory system is the network of organs and tissues that help you breathe. basically your airways, lungs, and blood vessels so you quite literally need these to survive I mean your muscles need oxygen to function and your brain needs oxygen to function so without your respiratory system you wouldn't be able to move much and you would quickly pass out and die from the lack of oxygen to your brain there are other body processes that need oxygen as well but these are just two examples.

Explanation:

8 0
3 years ago
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Which layer of the atmosphere is between the exosphere and the mesosphere
Olenka [21]

The atmosphere of earth is made of five main layers.

1) Troposphere : This is the lowest part of the atmosphere. Most of the air that makes up the atmosphere is present in this layer.

2) Stratosphere : This layer is present above troposphere and extends up to 50 km. It contains ozone layer which prevents the harmful ultraviolet rays from the sun from entering the lower troposphere

3) Mesosphere : The layer above stratosphere is known as mesosphere.

4) Thermosphere : The region lies above mesosphere.

5) Exosphere : The is the outermost region of the atmosphere.

From the above discussion we can see that the layer that lies between exosphere and mesosphere is Thermosphere

8 0
3 years ago
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If you have 250mL of an 11M solution and add enough water to dilute it to 7 M, then what is the final volume of the solution?
Luba_88 [7]
35.7M is the answer to this question
4 0
3 years ago
What allowed Mendeleev to make predictions of undiscovered elements
Andrej [43]

Answer:

he predicted the properties from known elements above and belws the unknown in the same group

Explanation:

What allowed Mendeleev to make predictions of undiscovered elements

He realized that an element on this table with one known element above it and one known  element below it had to have properties between the two known elements

How did Mendeleev predict gallium and germanium?

Based on gaps in the periodic table Mendeleev deduced that in these gaps belonged elements yet to be discovered. Based on other elements below and above in the same group he predicted the existence of eka-aluminum, eka-boron, and eka-silicon, later to be named gallium (Ga), scandium (Sc), and germanium (Ge).

3 0
2 years ago
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