Chemistry Answers

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.

Describe the bonding in methylamine, CH3NH2, using hybrid orbitals.

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+.

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