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Mariana [72]
3 years ago
8

Tooth enamel is chemically known as

Chemistry
1 answer:
Vladimir [108]3 years ago
7 0

Answer:

Hey!

Your answer is Calcium Phosphate!

Explanation:

It is the substance/mineral that is mostly found in our teeth and bones!

HOPE THIS HELPS!!

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Usually hard but brittle<br> Ionic or covalent
aleksandrvk [35]

Answer:

Ionic

Explanation:  Ionic compounds tend to be hard and brittle while covalent compounds tend to be softer and more flexible.

Hope this helped!

7 0
3 years ago
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What pressure is required to compress 156.0 liters of air at 2.00 atmosphere into a cylinder
garik1379 [7]

Answer:

option B.

Explanation:

Given,

V₁ = 156 L

P₁ =2 atm

Now, in the cylinder

P₂ = ?

V₂ = 36

Using relation between pressure and volume

\dfrac{P_1}{V_2}=\dfrac{P_2}{V_1}

\dfrac{2}{36}=\dfrac{P_2}{156}

P_2 = 8.67\ atm

Hence,  pressure is equal to 8.67 atm.

Hence, the correct answer is option B.

7 0
3 years ago
You are a researcher for a golf club manufacturer. You are given two identical looking cubes of a metal alloy. You are informed
Rashid [163]

Answer:

C.Melt both cubes and look for a broader range of melting temperatures. The one that melts over a broader range of temperatures is the amorphous solid.

Explanation:

Amorphous solids is one that do not have a fixed melting points but melt over a wide range of temperature due to the irregular shape hence its name. Contrariwise crystalline solids, have a fixed and sharp melting point.

This comes in handy to solve the riddle. We can characterise the pair with the melting point property.

7 0
3 years ago
For the reaction C2H5OH + O2 --&gt; 3CO2 + 3H2O
Lelechka [254]
The reaction given above is a combustion reaction. All combustion reactions are exothermic, meaning they give off heat when they react,
8 0
3 years ago
the mechanical advantage of a wheel and axle is the radius of the wheel divided by radius of the wheel divided by the radius of
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B 6 ft 2 in. = _____ ft
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