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stich3 [128]
3 years ago
7

When only one color of light reflects from a piece of paper, what happens to the other colors of light? Remember that light is e

nergy, and energy cannot be created or destroyed.
Chemistry
2 answers:
marta [7]3 years ago
6 0

Answer:

The other colors of the electromagnetic spectrum are absorbed by the substance and not reflected. If you were to look at it in infared or unltraviolet it would reflect different colors than those of the visible spectrum.

Explanation:

lana [24]3 years ago
3 0

Answer:

The other colors of the electromagnetic spectrum are absorbed by the substance and not reflected. If you were to look at it in infared or unltraviolet it would reflect different colors than those of the visible spectrum.

Explanation:

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What size volumetric flask would you use to create a 1.00M solution using 166.00 g of KI?
mr Goodwill [35]

Answer:

A 1 liter volumetric flask should be used.

Explanation:

First we <u>convert 166.00 g of KI into moles</u>, using its <em>molar mass</em>:

Molar mass of KI = Molar mass of K + Molar mass of I = 166 g/mol

  • 166.00 g ÷ 166 g/mol = 1 mol KI

Then we <u>calculate the required volume</u>, using the <em>definition of molarity</em>:

  • Molarity = moles / liters

Liters = moles / molarity

  • 1 mol / 1.00 M = 1 L
3 0
3 years ago
Please help.<br><br> Why does the temperature change when a powder is dissolved in water?
Schach [20]

Answer:

In order for the powder to dissolve, each powder molecule must separate from the other powder molecules and be surrounded by water molecules. This shift in arrangement either absorbs or releases energy depending on the situation. It is due to the exchange of energy that the temperature of the solution fluctuates.

Explanation:

:)

5 0
3 years ago
What expression approximates the volume of O2 consumed, measure at STP, when 55 g of Al reacts completely with excess O2?2 Al(s)
nikdorinn [45]

Answer : The volume of O_2 consumed are, 0.75\times 2\times 22.4 L.

Explanation :

The balanced chemical reaction will be:

4Al(s)+3O_2(g)\rightarrow 2Al_2O_3(s)

First we have to calculate the moles of Al.

\text{Moles of }Al=\frac{\text{Mass of }Al}{\text{Molar mass of }Al}

Molar mass of Al = 27 g/mole

\text{Moles of }Al=\frac{55g}{27g/mol}=2mole

Now we have to calculate the moles of O_2.

From the reaction we conclude that,

As, 4 mole of Al react with 3 moles of O_2

So, 2 mole of Al react with \frac{3}{4}\times 2=0.75\times 2 moles of O_2

Now we have to calculate the volume of O_2 consumed.

As we know that, 1 mole of substance occupies 22.4 liter volume of gas.

As, 1 mole of O_2 occupies 22.4 liter volume of O_2 gas

So, 0.75\times 2 mole of O_2 occupies 0.75\times 2\times 22.4 liter volume of O_2 gas

Therefore, the volume of O_2 consumed are, 0.75\times 2\times 22.4 L.

3 0
3 years ago
State two molecular characteristics of substances that typically form liquid crystals. How is each related to function?
ZanzabumX [31]

The two molecular characteristics of substances that typically form liquid cyrstals and there phases are  long, cylindrical shape and between molecules & strong intermolecular forces exist

All these enables different application of liquid crystals

To know  more about liquid crystals here

brainly.com/question/24378459

#SPJ4

7 0
2 years ago
Why might two elements posses similar chemical properties?​
Tems11 [23]

Same number of valence electrons

Explanation:

Two elements posses similar chemical properties if they have the same number of valence electrons.

Chemical properties of any substance is determined by the number of valence electrons it possesses in its outer most shell.

Elements use their valence electrons to form chemical bonds with one another.

Elements with the same number of valence electrons will chemically combine the same way.

This is why elements in the same group on the periodic table have the same chemical properties.

learn more:

Chemical properties brainly.com/question/2376134

#learnwithBrainly

3 0
3 years ago
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