If the temperature of a piece of aluminum increases from 19°C to 34°C and it absorbs 278.5 cal of heat, what is the mass of the sample?
A. 901.19
B. 86.19
DATA TABLE 1
Specific Heat of Common
Substances
Specific
Heat
Substance Formula
(cal/g
°C
Aluminum A1 0.2157
Zinc Zn 0.0928
Iron Fe 0.1074
Ethanol C2H5OH 0.5783
Tin Sn 0.0543
Nickel Ni 0.1062
C. 18.5 g
D. 0.012 g

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.  

atomic number of carbon is 6

electronic configuration of carbon is 1s²2s²2p²

orbital diagram of carbon is as shown here in the image.