Answer:
A. to show the number of lithium atoms involved in the reaction
Explanation:
The reaction between lithium and sulfur produces lithium sulfide where two lithium and one sulfur atoms react.
Balanced equation: 2 Li + S = Li2S
The 2 present before Li on the reactant's side shows how many lithium atoms are supposed to be present per every 1 sulfur atom for this reaction to be balanced and true.
That is it! :)
Answer:
Carbon (C)
Explanation:
Organic chemistry is generally defined as the chemistry of carbon compounds. In order words, organic compounds are those compounds that contain carbon.
However, one characteristic of organic compounds is that in organic compounds, carbon links to itself to form long chains. This property is known as catenation. When we look at the compound. There are six carbon to carbon linkages. This is typical of organic compounds. Hence the substance is an organic compound.
pKa is a value which is related to the acid dissociation constant Ka
pKa = -log Ka
i.e. Ka = 10^-pKa
The deprotonation reaction of acetylene is:
HC≡CH ↔ HC≡C⁻ + H⁺
pKa (HC≡CH) = 25
Solvents with pKa greater than 25 will deprotonate acetylene.
Ans: CH2=CH⁻ pka = 44 and CH3NH⁻ pka = 40
Sir William Herschel announced its discovery on 13 March 1781, expanding the known boundaries of the Solar System for the first time in history and making Uranus the first planet discovered with a telescope.
