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

What formula is most likely when aluminum and oxygen combine together? Hint: Consider the charges of Al and O atoms (Al is in group 3, O is in group 6)

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

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

The motivating potential score (MPS) is used to measure the overall potential of a job to motivate employees.

If an airplane’s speed is 750 mi/h, what is its speed in m/s? (Hint: 1 mile = 1.609 Km, 1 km = 1000 m, 1 min = 60 s, 1h = 60 min)

Which of the following is the weakest acid?

Job sharing is becoming more popular worldwide.

Select the nonmetal from the following list