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Account for the ability of phosphorus to form five bonds, as in PF5.
Account for the ability of nitrogen to form four bonds, as in NH4+.
The inner tube of a Pyrex glass mercury thermometer has a diameter of 0.120 mm. The bulb at the bottom of the thermometer contains 0.420 cm3 of mercury. How far will the thread of mercury move for an increase of 1.00°C? Remember to take into account the expansion of the glass. Coefficient of Linear Expansion of Glass(Pyrex) is 3.25 × 10−6 K−1 and Coefficient of Volume Expansion of Mercury is 182 × 10−6 K−1.
Normalize to 1 the molecular orbital ψ = ψA + λψB in terms of the parameter λ and the overlap integral S. Assume that ψA and ψB are normalized to 1.
Discuss the role of the Born–Oppenheimer approximation in the molecular-orbital calculation of a molecular potential energy curve or surface.
By applying solubility guidelines,state which of the following compounds will precipitate in water
1 cobalt (ll) hydroxide
2 sodium nitrate
3 Ammonium phosphate
4 potassium chloride
5 none of the above
a reading center demands that the students will perform better on a standardized reading test after going through the reading test after going through the reading course offered by their center. the table shows the reading scores of 5 students before and after the course. at α=0.10, is there enough evidence to conclude that the students’ scores after the course are better than the scores before the course?
STUDENT BEFORE AFTER
1 85 88
2 96 85
3 70 89
4 76 86
5 81 92
Determine the force of gravitational attraction between the earth (m = 5.98 x 1024 kg) and a 63.0-kg man if the man is standing at sea level, a distance of 6.38 x 106 m from earth's center.
3. A point charge Qa = 3uC is located at point (0, 0) and another point Qb = - 7uC has the coordinates of (2, 3).
a) Find the electric force on charge Qa.
b) Is the force attractive or repulsive? Why?
what is the poh of a 7.2 x 10-8 m blood sample
#340153 on Dec 2023