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Thepotemich [5.8K]

3 years ago

9

You were asked to determine the identity of an unknown liquid and can measure only one physical property. you heat the liquid an

d record that the liquid turns to vapor at hundred degrees Celsius. this demonstrates what physical property

1 answer:

Butoxors [25]3 years ago

7 0

I did this before and i had got an A no it but its been along time tho

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grin007 [14]

Answer:

light energy is a form of electromagnetic radiations of a wavelength, which can be seen by the human eye.

4 0

2 years ago

A plant that has a high amount of orange pigment carotene would have leaves what color?

coldgirl [10]

The orange pigment carotene absorbs the orange wavelength of light very poorly, which makes the leaves appear orange.

7 0

2 years ago

If a substance is a bad conductor as a solid, but a good conductor as a liquid or when dissolved into water, which type of bond

GenaCL600 [577]

An ionic bond. covalent bonds do not conduct in a solid or a liquid state, ionic bonds conduct in a liquid state and not in a solid state.

6 0

2 years ago

Please help me please I beg someone please help me !!!

Verdich [7]

Answer:

Object 1 = Moving Towards Earth

Object 2 = Moving Away From Earth

Object 3 = Moving Towards Earth

Explanation:

When you look at emission spectras, look at where the observed lines are in comparison to the element (stationary) lines. Ones that have observed lines closer to the left are moving towards you and ones with observed lines closer to the right are moving away from you.

5 0

2 years ago

The active ingredient in toothpaste is sodium fluoride an anticavity agent. A 170. Gube

ivann1987 [24]

There are <u>0.408 grams</u><u> </u>of sodium fluoride in the toothpaste.

Why?

We know that there is 0.24% of sodium floride in a 170 grams toothpaste tube. Since the only information related to the toothpaste is its mass, we can assume that the 0.24% (concentration) is referring to the mass percent, and we can calculate it using the following equation:

$MassPercent=\frac{MassSolute}{MasSolution}*100(percent)$

Now, substituting the given information and calculating, we have:

$MassPercent=\frac{MassSolute}{MasSolution}*100(percent)$

$\frac{MassPercent*MassSolution}{100}=MassSolute(NaF)\\\\MassSolute(NaF)=\frac{0.24*170g}{100}=0.408g$

We have that there are 0.408 grams of sodium fluoride in the toothpaste.

Have a nice day!

6 0

3 years ago