The pressure unit is Pascal (sign Pa) or Newton per square meter (N / m2). In enhancement to Pascal, a press measurement unit can be used bar (1 bar = 105 Pa). The old push units are: technical atmosphere, the symbol in ~ (1 at = 98 066.5 Pa); standard, typical or physical atmosphere, atm (1 atm = 101 325 Pa); millimetres of mercury, the symbol mmHg, or torr (1 mmHg = 1 torr = 133,322 Pa); millimeter of water, symbol mmH2O (1 mmH2O = 9.806 65 Pa).

You are watching: Convert the pressure 0.840 atm to mmhg

1 atm = 101 325 Pa1 mmHg = 133,322 Pa

1 atm = 101 325/133.322 = 760 mmHg

0.84 atm = 760 x 0.84 = 638.4 mmHg

assuming the your routine table has eighteen columns, you need to highlight the four elements in the 3rd column from the left of the table.

explanation

neutral atom of elements after calcium contain d electrons. The energy of d orbitals of a specific main shell lies between the power of the s and also p orbitals that the next main shell. For example, electrons in the have actually energy greater than those in the orbital while lower than those that the orbital.

by the aufbau principle, electrons to fill orbitals one in ~ a time, starting from those that the lowest energy. The orbital is as such filled right after orbitals and also before orbitals.

potassium has electron configuration 4 s^1" title="tex-28"> and calcium 4 s^2" title="tex-29">. The s orbit of a key shell stop a preferably of 2 electrons. The next element would thus have the electron construction 4 s^2" title="tex-29"> and satisfy the requirements.

a neutral atom the the aspect contains three electrons on top of the many recent noble gas element. That should hence be inserted in the 3rd column that the regular table. Both scandium and yttrium would fulfill the conditions. One aufbau diagram suggests that the 4f orbital is filled prior to the 5d. However, it shows up that exceptions exists because that both lanthanum and also actinium. Neutral atom of the two d-block elements likewise demonstrate the and also should it is in highlighted together well.

See more: What Is 1.6 Repeating As A Fraction Calculator, Convert Decimal 1

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