Nylon is named as the most useful synthetic material. Nylon belongs to a family of materials called "polyamides."
There are 3 pairs of electrons that are shared between nitrogen atoms in a nitrogen molecule. Nitrogen atom has a valence electron of 5. To complete it and agree with the octet rule, it should be that three electrons should share with another atom.
Answer:
232 g CO2
Explanation:
2 C8H18 + 25 O2 --> 16 CO2 + 18 H2O
75.3 g C8H18 (1mol / 114.26g) (16 mol CO2/2 mol C8H18) (44.01 g/1 mol) = 232 g
Given data:
Mass of copper (m) = 20.0 g
Initial temperature of Copper (T1)= 25 C
Final temperature = T2
Heat absorbed by copper (Q) = 475 J
Specific heat of Copper (c) = 0.385 J/g C
Formula:
Q = mcΔT
= mc(T2-T1)
475 = 20*0.385*(T2-25)
62.08 = T2-25
T2 = 87.08 = 87.1 C
To find the mass number u add the protons and neutrons so 8+10
The mass number is 18