Answer:
<h3><em>Mixtures</em><em> </em><em>are </em><em>physically</em><em> </em><em>combined</em><em> </em><em>and</em><em> </em><em>pure </em><em>substance</em><em>s</em><em> </em><em>are </em><em>chemically</em><em> </em><em>combined</em><em>.</em></h3>
Answer: Nichrome
Explanation: Hot water system coils are commonly made up of metal alloys which are a combination of two or more elements. The most commonly used metal alloy is “Nichrome”. Nichrome is an alloy of nickel (80%) and chromium (20%).
Answer:
Coke.
Explanation:
The distillation of coal tar can obtain aromatic compounds like benzene and toluene, and also phenolic compounds like phenol. Hence, the only option here that cannot be obtained from the distillation of coal tar is coke.
Hope this helped!
Answer:
Atoms=9.033*10^23 atoms
Explanation:
Atoms=no.of miles*Avogadro's no.
Atoms=1.5*6.022*10^23
Atoms=9.033*10^23 atoms
