“The Planck constant (denoted h), also called Planck's constant, is a physical constant used to...Planck constant
“The stratosphere is the second major layer of Earth's atmosphere, just above the troposphere...Stratosphere
“Template:Infobox magnesium Magnesium (pronounced /mæɡˈniːziəm/, Template:Respell) is a chemical...Magnesium
“Hydrogen peroxide (H2O2) is a very pale blue liquid, slightly more viscous than water, that...Hydrogen peroxide
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