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A TOOTHPASTE HAS AN ACTIVE INGREDIENT SODIUM FLOURIDE. WHAT IS THE PERCENTAGE COMPOSITION OF FLUORIDE IN THE COMPOUND?
Express the concentration of solution in % w/v containing 12 g sodium chloride and 50 ml of water.
5.0 L of 0.4 M H2SO4 contains how many moles?
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In a laboratory pot experiment, what is the allowed or standard weight in mg.kg-1 of each of this Cadmium, selenium, and silicon to be added to the pot experiment.
Examine whether occupation of the bonding orbital in the H2+ molecule-ion by one electron has a greater or lesser bonding effect than occupation of the antibonding orbital by one electron. Is your conclusion true at all internuclear separations?
Suppose that a molecular orbital has the (unnormalized) form 0.145A + 0.844B. Find a linear combination of the orbitals A and B that is orthogonal to this combination and determine the normalization constants of both combinations using S = 0.250.
Show that if two equivalent hybrid orbitals of the form spλ make an angle θ to each other, then λ = ±(−1/cos θ)1/2. Plot a graph of λ against θ and confirm that θ = 180° when no s orbital is included and θ = 120° when λ = 2.
Use the wavefunction for a H1s orbital to write a valence-bond wavefunction of the form Ψ(1,2) = A(1)B(2) + A(2)B(1) in terms of the Cartesian coordinates of each electron, given that the internuclear separation (along the z-axis) is R.
Describe the bonding in methylamine, CH3NH2, using hybrid orbitals.
Account for the ability of phosphorus to form five bonds, as in PF5.
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#339914 on Dec 2023