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3 years ago

5

Controlled nuclear chain reactions A. take place in nuclear reactors. B. are always fusion reactions. C. never produce radioacti

ve by-products. D. are characteristic of atomic bombs.

1 answer:

Hunter-Best [27]3 years ago

3 0

A is the best answer....

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A buffer solution is prepared by dissolving equal amounts of ascorbic acid and sodium ascorbate, the conjugate base, in water. T

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Someone answer the limited regent...

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Answer:

20 g Ag

General Formulas and Concepts:

<u>Chemistry - Stoichiometry</u>

Using Dimensional Analysis

<u>Chemistry - Atomic Structure</u>

Reading a Periodic Table

Explanation:

<u>Step 1: Define</u>

[RxN] Cu (s) + AgNO₃ (aq) → CuNO₃ (aq) + Ag (s)

[Given] 10 g Cu

<u>Step 2: Identify Conversions</u>

[RxN] 1 mol Cu = 1 mol Ag

Molar Mass of Cu - 63.55 g/mol

Molar Mass of Ag - 197.87 g/mol

<u>Step 3: Stoichiometry</u>

<u /> $10 \ g \ Cu(\frac{1 \ mol \ Cu}{63.55 \ g \ Cu})(\frac{1 \ mol \ Ag}{1 \ mol \ Cu} )(\frac{197.87 \ g \ Ag}{1 \ mol \ Ag} )$ = 16.974 g Ag

<u>Step 4: Check</u>

<em>We are given 1 sig fig. Follow sig fig rules and round.</em>

16.974 g Ag ≈ 20 g Ag

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