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3 years ago

Compare and contrast a pure substance with a mixture and give an example.

1 answer:

3 0

Of any substance? What about two powders such as 1/2 cup of white flour, then mixing 1/2 cup of salt together with the flour. This would then form a more coarse mixture being that the two particles differ in shape.

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Explain light and waves and the properties of both.

yKpoI14uk [10]

Answer:

Electromagnetic waves are typically described by any of the following three physical properties: frequency (f), wavelength (λ), or intensity (I). Light quanta are typically described by frequency (f), wavelength (λ), or photon energy (E).

Explanation:

please mark as brainlist

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2 years ago

What is the conclusion of an experiment

Misha Larkins [42]

The conclusion includes a summary of the results, whether or not the hypothesis was supported, the significance of the study, and future research.

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2 years ago

Read 2 more answers

Each of the following organs had a role in excretion, EXCEPT for the _____?

eimsori [14]

Answer:

c. the heart

all the rest actually will excrete, the heart is in a closed system so contributes to excretory organs but doesn't actually do it barring an accident

Explanation:

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2 years ago

Read 2 more answers

What element has a total of 3 p-sublevel electrons?

den301095 [7]

Elements with three p-electrons....

That would be N, P, As, Sb, and Bi -- elements in group 15

For example, energy diagram showing "empty" orbitals up through the 3p.

.....3p __ __ __

3s __

.....2p __ __ __

2s __

1s __

Energy diagram of phosphorous showing three unpaired electrons in 3p-sublevel

.....3p ↑_ ↑_ ↑_

3s ↑↓

.....2p ↑↓ ↑↓ ↑↓

2s ↑↓

1s ↑↓

According to Hund's rule, the electrons singly occupy the p-orbitals, and all have the same spin.

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2 years ago

Which of the following atoms is smallest: nitrogen, phosphorus, or arsenic?

snow_lady [41]

Answer:

arsenic

Explanation:

nitrogen=155pm

phosphorus=195pm

arsenic =between 38 μm and 25 mm

3 0

2 years ago