A62.6-gram piece of heated limestone is placed into 75.0 grams of water at 23.1°c. the limestone and the water come to a final temperature of 51.9°c. the specific heat capacity of water is 4.186 joules/gram degree celsius, and the specific heat capacity of limestone is 0.921 joules/gram degree celsius. what was the initial temperature of the limestone? express your answer to three significant figures.

m₁ = mass of water = 75 g

T₁ = initial temperature of water = 23.1 °C

c₁ = specific heat of water = 4.186 J/g°C

m₂ = mass of limestone = 62.6 g

T₂ = initial temperature of limestone = ?

c₂ = specific heat of limestone = 0.921 J/g°C

T = equilibrium temperature = 51.9 °C

using conservation of heat

Heat lost by limestone = heat gained by water

m₂c₂(T₂ - T) = m₁c₁(T - T₁)

inserting the values

(62.6) (0.921) (T₂ - 51.9) = (75) (4.186) (51.9 - 23.1)

T₂ = 208.73 °C

in three significant  figures

T₂ = 209 °C

answer: option (b) is the correct answer.

explanation:

a covalent bond is formed by sharing of electrons. whereas polarity arises due to difference in electronegativity of two atoms.

therefore, more is the electronegativity of an atom which combines with the titanium, more readily it will induce a partial positive and negative charge.

thus, out of the given options fluorine is most electronegative and has an incomplete octet. therefore, it will readily combine with titanium to share the electrons and complete its octet.  

answer; natural resources;