Temporary hardness can be dealt with using boiling water(Calcium hydrogen carbonate) but Permanent won't so you need to use washing soda instead(sodium carbonate) or Ion exchange resin
Answer: The statement is true
Explanation:
The half-life of a radioactive isotope is the time taken for half of the total number of atoms in a given sample of the isotope to decay.
For instance
The half-life of radium is 1622 years. This means that if we have 1000 radium atoms at the beginning, then at the end of 1622 years, 500 atoms would have disintegrated, leaving 500 undecayed radium atoms
Thus, the statement is true
The number of moles of carbon atoms that are in 0.45 moles of C3H6O is 1.35 moles
step by step explanation
Find the total number of carbon atom in C3H6O
that is 1 x 3 = 3 atoms
0.45 moles is for one atom
what about 3 atoms
by cross multiplication
3 x0.45 = 1.35 moles
Answer:
The wave gets Larger due to increased amplitude
Any deviation in the image of an object when light passing from one medium to other is assciated to the phenomenon of refraction.
<h3>What is refraction ?</h3>
It is the deflection from a straight path undergone by a light ray while passing from one medium (such as air) into another (such as glass) in which its velocity is different.
Basically, the light refraction gives the pencil a slight magnifying effect, which makes the angle appear bigger than it actually is, causing the pencil to look crooked.
<h3 />
- After Looking at the pencil from the side of a clear glass or resealable plastic bag filled three-fourths with water, we will see the light bends around the pencil, causing it to look bent in the water.
- When the pencil tilt from side to side, It looks so dramatically broken on looking at it from different angles.
We can magically “fix” the broken pencil by changing where the pencil is positioned in the glass.
Learn more about Light here;
brainly.com/question/22216162
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