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amm1812
3 years ago
12

Which material is the least likely to be recognized as a mixture by looking at it under a microscope

Chemistry
2 answers:
PSYCHO15rus [73]3 years ago
5 0
A homogenous mixture is uniform and thus hard to recognize as a mixture. An example is water!
alexgriva [62]3 years ago
5 0

Answer:

C. a homogeneous mixture

Explanation:

I did this on the ed test

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Why must energy be used to produce the colors seen
olga_2 [115]

Answer:

Visible light contains all the colors from violet to red. An object gets its color when electrons absorb energy from the light and become “excited” (raised to a state of increased energy). The excited electrons absorb certain wavelengths of light.

The Sun emits light of every possible frequency at once, including at frequencies too high or too low for us to see. But the Sun's highest intensity radiation aligns approximately with our visible range – red through blue. That's no coincidence – like all animals on Earth, we have evolved to make best use of the light available.

Explanation:

8 0
2 years ago
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What is the proper way to write sodium in crystal form
Marysya12 [62]

Answer:

In the solid state Sodium has a body-centered cubic crystal structure with a = 0.428 nm and a nearest neighbor distance of 0.371 nm.

<u>(I don't really know but I hope if this answer is correct for you)</u>.

5 0
2 years ago
A student is performing a titration to determine the concentration of a 20.0 mL sample of hydrochloric acid. What did the studen
irakobra [83]

Answer:

0.25M HCl

Explanation:

The reaction of HCl with NaOH is:

HCl + NaOH ⇄ H₂O + NaCl

<em>Where 1 mole of HCl reacts per mole of NaOH</em>

The end point was reached when the student added:

0.0500L × (0.1mol / L) = 0.00500 moles of NaOH

As 1 mole of HCl reacted per mole of NaOH, moles of HCl present are:

<em>0.00500 moles HCl</em>

The volume of the sample of hydrochloric acid was 20.0mL = 0.0200L, and concentration of the sample is:

0.00500 mol HCl / 0.0200L = <em>0.25M HCl</em>

8 0
2 years ago
Aqueous humor forms during capillary filtration in the __________?
Karolina [17]

Answer:

Ciliary body.

Explanation:

Ciliary body: It is the known for the part of the eye that includes the ciliary muscle, which helps in the control the ciliary epithelium and lens shape, which are helping in the production of aqueous humor.

Through active secretion mechanism helping in to produce eighty percent of aqueous humor, and through the plasma ultra-filtration mechanism twenty percent of aqueous humor is produced.

Ciliary body is the part of the layer which helps to deliver the nutrients, and oxygen to the eye tissues, and this layer is known as uvea.

7 0
3 years ago
Which of these statements is not true?question 20 options:atoms of isotopes of an element have different numbers of protons.atom
Greeley [361]
The first one is the answer
isotopes of an atom have different number of neutrons . the number of protons are not different in isotopes of an atom
4 0
3 years ago
Read 2 more answers
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