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2 years ago

Calculate the mass of 4.95 x 10^15 Ag atoms

Chemistry

1 answer:

solmaris [256]2 years ago

4 0

Answer:

8.87 × 10⁻⁷ grams

Explanation:

Moles = No. of Particles / 6.022 × 10²³ Particles/mol

Moles = 4.95 × 10¹⁵ atoms / 6.022 × 10²³ atoms/mol

Moles = 8.22 × 10⁻⁹ mol

Also,

Mass = Moles × M.Mass

Mass = 8.22 × 10⁻⁹ mol × 107.87 g/mol

Mass = 8.87 × 10⁻⁷ grams

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Aloiza [94]

Answer:

a. +2

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c. -1

Explanation:

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a. Calcium belongs to group 2A, meaning it has 2 valence electrons and, therefore, would have an oxidation state of +2 in compounds.

b. Aluminum is in group 3A, meaning it has 3 valence electrons and would have an oxidation state of +3 in compounds when the 3 electrons are lost.

c. Fluorine would become fluorine if it gained 1 additional electron to achieve an octet, so its oxidation state would be -1.

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3 years ago

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Ilia_Sergeevich [38]

Answer: 39.948 grams

Explanation:

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3 years ago

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geniusboy [140]

Answer:

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Explanation:

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3 years ago

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Lemur [1.5K]

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3 years ago

Choose the following statements that show evidence for a chemical reaction.

Leno4ka [110]

Explanation:

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3 years ago