D. 18 as the elements in this group are the noble gases which exist as monoatomic elements with a full outer shell
1. 1086.04 mmHg
2.70.213 mmHg
3. 95.954 kPa
<h3>Further explanation</h3>
Pressure (P) is the force applied per unit area
Can be formulated :
P = pressure (SI=Pascal(Pa))
F= force applied (N)
A=area(m²)
The unit of pressure can be expressed in atm, mmHg, or Pascal
Since N2 is a covalent bond, the lewis dot structure of N2 would have a triple bond. Each bond contains 2 electrons, so if it has a triple bond it contains 6 electrons.
Calculate the number of valence electrons of N2
N= 2x 5 = 10
N2 has a total of 10 valence electrons, to become stable each N atom needs 8 electrons.
So, therefore, 6 electrons would have to be a part of covalent bonds because they share 6 electrons in a triple bond.
The answer is b.
Normally, neuronal cell membranes have negative voltages across them (meaning that the inside is more negative relative to the exterior). In the event of an action potential (when a neuron fires), the first thing that happens is that the membrane depolarizes, meaning that the charge of the inside relative to the outside begins to reverse. This happens when voltage-gated ion channels allow sodium ions (Na+, positively charged) to rush through the membrane and into the cell. Thus, the polarity of the membrane charge begins to reverse (inside more positive, outside less positive), which is what we call depolarization.
The accuracy is associated with magnitude of fractional error or relative error in that measurement
the precision of a measurement is associated with least count of the measuring instrument.
precision does not mean accuracy but both are highly demanded while making measurements in physics.