Calculate each of the following quantities.

(a) Total number of ions in 47.8 g of SrF2
(b) Mass (kg) of 4.90 mol of CuCl2 · 2 H2O
(c) Mass (mg) of 2.67 1022 formula units of Bi(NO3)3 · 5 H2O

CHAPTER 2 ATOMS, MOLECULES, AND IONS Questions 16. ... A molecule has no overall charge (an equal number of electrons and protons are present). Ions ... The first sample of chloroform has a total mass of 12.0 g C + 106.4 g Cl + 1.01 g H ... SrF2 f. Al2Se3 g. K3N h. Mg3P2 72. a. mercury(I) oxide b. iron(III) bromide c.

Explanation:

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the answer is 303.15 or 303

answer:

the answer is 6 valence electrons.

explanation:

valence is the # of electrons on the outer most shell of an atom.

oxygen has 6.

although, the valency of oxygen is 2, because it only needs to make 2 covalent bonds, or gain 2 electrons, to achieve the stable octet configuration of a noble gas.

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