Answer:
Enamel is there to protect teeth from decay and damage. Every time you eat and drink, you expose your teeth to acids and bacteria from your food. This would seriously harm teeth if it weren't for enamel.
Explanation:
Hope it helps,
Please mark me as brainliest
Thank you
Angles do not change they can only rotate in a circular motion if the angles in a 30°−60°−90° triangle after it is rotated clockwise at 45°.
<h3>What are the angles?</h3>
The angles are the distance between two lines that are attached at one point and they can vary in shapes like triangle and square or circle and rectangle.
The square has the handle of equality for all the sides rectangle has two opposite side angles equal and the circle It has only one angle triangle consisting of 3 angles which are fixed and cannot be changed.
Therefore, if the angles in a 30°−60°−90° triangle after it is rotated clockwise at 45°Angles do not change they can only rotate in a circular motion.
Learn more about angles, here:
brainly.com/question/14569348
#SPJ2
Answer:
19.4%
Explanation:
Calcium Chlorate is Ca(ClO3)2
Now calculate the molar mass of Ca(ClO3)2
Ca = 40.1
Cl = 35.5
O = 16.0
But they are two chlorine atoms and six oxygen atoms. So you do this:
40.1 + 35.5(2) + 16.0(6) = 207.1 grams
Now find the molar mass of just calcium.
There is only one calcium atom.
So you do this.
40.1(1) = 40.1
Now divide the molar mass of calcium by the molar mass of calcium chlorate.
40.1 / 207.1 = 0.1936
0.1936 rounds to 0.194
Now multiply 0.194 * 100 and you will get 19.4
So the final answer is 19.4%.
Hope it helped!
Water vapor, nitrogen, oxygen, carbon dioxide, helium, argon, and neon
Hope I helped a bit
XD
The correct option would be that oxygen, nitrogen, and carbon dioxide cannot react with one another.
<h3>Why air components cannot react</h3>
The components of atmospheric air, nitrogen, oxygen, carbon dioxide, etc., cannot react with one another because there is not enough energy in the atmosphere to set the reaction rolling.
For a reaction to take place, there must be enough energy to break the bonds in each air component. This is why the air components will not spontaneously react with one another, except during special events such as lightning and thunder.
More on air components can be found here: brainly.com/question/17288850
#SPJ1
