T h e   e n t h a l p y   o f t h e   r e a t i o n 2 M g   +   O 2   → 2 M g O   i s   – 1610   k J .   F i n d   t h e   e n t h a l p y   o f   t h e   f o l l o w i n g   r e a c t i o n   i s M g   +   1 2 O 2   → M g O 

Calculate the bond order of N2 molecule (N is in grip 5) N2 MO diagram.pdf

Identify structure “P” of Nervous tissue. 

Choose the correct number of protons, electrons, and neutrons in the Br- (bromide) ion: 35 80 B r –  Protons Electrons Neutrons  A 35 45 35 B 35 35 45 C 35 35 80 D 35 36 45 E 34 35 45

Identify structure “6” of the neuron. 

Which of the following is NOT a diatomic species in its molecular state  (Hint: Hydrogen exists as H2 and it is a diatomic gas)

Identify structure “15”. 

Identify structure “16”. 

Identify structure “4” of the neuron. 

The temperature of a 12.58 g sample of calcium carbonate increases from 23.6 Celsius to 38.3 Celsius. If the specific heat of CaCO3 is 0.82 J/g0C, how many joules of heat are absorbed during this process? (Hint: Heat = Mass x specific heat x change in temperature)