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zysi [14]
3 years ago
15

Which of the following statements below correctly describes the parts of an atom that determine the atom's identity and chemical

properties?
A. Neutrons determine identity and the electron cloud determines chemical properties.

B. Protons determine identity and valence electrons determine chemical properties.

C. Valence electrons determine identity and protons determine chemical properties.

D. The electron cloud determines identity and neutrons determine chemical properties.
Chemistry
1 answer:
stich3 [128]3 years ago
6 0

Answer:

B protons determine indentity and valence electrons determine chemical properties.

:)

Explanation:

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(You do) If you have 47.2 mol of Na available, along with an excess of Cl₂, how many grams of NaCl can you produce?
IrinaVladis [17]

Answer:

2,760 grams NaCl

Explanation:

To find grams of NaCl, you need to (1) convert moles of Na to moles of NaCl (via mole-to-mole ratio from reaction) and (2) convert moles of NaCl to grams (via molar mass from periodic table). The final answer should have 3 significant figures based on the given measurement.

2 Na + Cl₂ --> 2 NaCl

Molar Mass (NaCl) = 22.99 g/mol + 35.45 g/mol

Molar Mass (NaCl) = 58.44 g/mol

47.2 moles Na           2 moles NaCl              58.44 grams

----------------------  x  ---------------------------  x  -------------------------  =
                                   2 moles Na                   1 mole NaCl

= 2,758.368 grams NaCl

= 2,760 grams NaCl

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1 year ago
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