According to octet rule element has eight electrons in its valence shell.This give it the same electronic configuration as a group 18 elements.Atom with electronic configuration 1s2 2s2 2p1 require five electrons to achieve octet. This is because the valence electrons are 3 in 2s2 and 2p1 and hence require 5 electrons to be filled.
Answer:
C. Graph C
Explanation:
We have a mixture of water and ice.
At 0 °C they are at equilibrium.
water-to-ice rate = ice-to-water rate
Next, we lower the temperature to -3 °C — just slightly below freezing.
The water will slowly turn to ice.
The water-to-ice rate will be slightly faster than the ice-to-water rate.
The purple bar will be slightly higher than the blue bar.
Graph C best represents the relative rates
A. is wrong. The ice-to-water rate is faster, so the water is melting. The temperature is slightly above freezing (say, 3 °C).
B. is wrong. The two rates are equal, so the temperature is 0 °C.
D. is wrong. The water-to-ice rate (freezing) is much greater than the ice-to-water rate, so the temperature is well below freezing( say, -10 °C).
Answer:
I think it's answer would be A
Ionic Bonds have a Lower melting and Covalent have higher.
Answer:The final volume of nitrogen gas will be 13 L. Nitrogen gas was collected in the plastic bag.
Explanation:
Volume of the storage cylinder:
Volume of the cylinder = 
Diameter of the cylinder (d)= 6.6 cm
So, radius of the cylinder 
Height of the cylinder = 26 cm
Volume of the cylinder=
Pressure of the 
gas in a cylinder =
The cylinder is opened and the gas allowed to escape into a large empty plastic bag. So, now the value of the pressure
will become equal to atmospheric pressure that 1 atm .
Volume of gas in plastic bag 
will be given by the expression of Boyle's law
On substituting the values:
The final volume of nitrogen gas will be 13.24 L when rounded of to two significant figures will be 13 L. Nitrogen gas was collected in the plastic bag.
