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Answer: Sulphuric acid and potassium dichromate.
An atom consists of three sub-atomic components; protons, neutrons and electrons. The nucleus contains protons and neutrons. Electrons orbit the nucleus. Protons have a positive charge, electrons have a n...
H2SO4 fully dissociates into ions (strong acid). It is diprotic therefore concentration of H+ ions is twice that of the acid = 0.4 M. pH = -log[H+] = -log[0.4] ...
AsH3 is a larger molecule than PH3 as As is lower down the periodic table, so has a higher atomic number so more electrons. Therefore AsH3 has more electrons than PH3 mean...
Carbon Dioxide consists of 1 carbon atom covalently bonded to two oxygen atoms.Carbon is in group 4 and so has 4 electrons in its outer shell.Carbon shares two pairs of electrons with each of the oxygen a...
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