Which solution is used as a preservative for a blood sample? O A a solution of 0.1 mg sodium citrate plus 0.1 mg mercuric chloride
ОВ.
a solution of 0.5 mg sodium citrate plus 0.1 mg mercuric chloride
Ос.
a solution of 0.5 mg sodium citrate plus 0.5 mg mercuric chloride
OD
a solution of 0.8 mg sodium citrate plus 0.5 mg mercuric chloride
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How much heat is released upon converting one mole of steam (18.0 g) from 100.0 ∘c to water at 25.0 ∘c? show work and constants, trying to figure out how it works. only given the heat capacity for steam and water so try to only use that

Select all of the statements which are true. electrons are located in shells or orbits around the atom. electrons orbit slowly around the atom. electrons travel in one flat path around the nucleus of an atom. the valence of an atom is determined by the number of electrons in the atom's outermost shell.

The ozone molecule o3 has a permanent dipole moment of 1.8×10−30 cm. although the molecule is very slightly bent-which is why it has a dipole moment-it can be modeled as a uniform rod of length 2.5×10−10 m with the dipole moment perpendicular to the axis of the rod. suppose an ozone molecule is in a 8000 n/c uniform electric field. in equilibrium, the dipole moment is aligned with the electric field. but if the molecule is rotated by a small angle and released, it will oscillate back and forth in simple harmonic motion.what is the frequency f of oscillation?