Answer:
Molecular compounds are pure substances formed when atoms are linked together by sharing of electrons while ionic compounds are formed due to the transfer of electrons.
Molecular compounds are made due to covalent bonding while ionic compounds are made due to ionic bonding.
Explanation:
Q = mcΔT
m = 75 g
c = 4.25 J/gram°C
q = 2450 J
q/mc = ΔT
2450/(75 • 4.25) = 7.7°C
The temperature increased by 7.7°C.
Answer:
The concentration is 0.025 M.
Explanation:
We will use beer law to find the concentration.
A = εmCl
This law relate to the linear equation Y = mx + b in following way,
A = y = absorbance
m = εm = slope or extinction coefficient in beer law.
x = c = concentration
and l is length which is 1 cm
Thus equation can be written as,
A = εmc + b
A - b / εm = c
in order to find the concentration we will abstract the intercept from absorbance and then divide it by the slop.
0.02 - 0.011 / 0.36 = c
c =0.009
c = 0.025 M.
