Electromagnetic wave travels faster through air than metal.
Option A
<u>Explanation:</u>
There are different kinds of wave energy. The most significant are electromagnetic and mechanical waves. The mechanical waves propagate through the medium by transfer of energy by vibrating of particles in medium.
So, the more number of particles present in the medium, the more fast the mechanical wave can propagate. So the mechanical waves travel faster in metals consisting of more number of free charge carriers. But electromagnetic waves does not need any of the medium to propagate. So it can travel faster in air than in metals.
The moles of CaCO3 which are there in antacid tablet that contain 0.515g CaCO3 is calculated as follows
moles =mass/molar mass
the molar mass of CaCO3 = ( 40 x1)+ (12 x 1) + (16 x 3)= 100 g/mol
moles is therefore= 0.515g/100 g/mol= 5.15 x10^-3 moles
Explanation:
<h3>Because melting point and freezing point describe the same transition of matter, in this case from liquid to solid (freezing) or equivalently, from solid to liquid (melting). It is stuck on 0 ∘C during the entire melting or freezing process. None except melting is when you heat up and freezing when you cool down.</h3>
<h2>hope it helps.</h2><h2>stay safe healthy and happy.</h2>
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<h2>it is not dirty so do try it >:((((((</h2>
