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stira [4]
3 years ago
9

What is 4.07 cm x 2.3cm, rounded to the correct number of significant figures

Chemistry
1 answer:
Tom [10]3 years ago
8 0

Answer: 9.4cm^2

Explanation:

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<em>Balanced equation</em> = 2Ag + S ⟶ Ag₂S

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3 years ago
How does the amount of energy coming from the energy source (low vs. high) affect the amount of electrical energy created.
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Explanation:

6 0
2 years ago
How many moles of silver are there in 6.9 x 10^28 silver atoms?
Juli2301 [7.4K]

Answer:

1.2 x 10⁵ moles Ag (2 sig. figs.)

Explanation:

1 mole any substance (elements or compounds) => 6.023 x 10²³ particles of specified substance

∴ 6.9 x 10²⁸ atoms Ag = 6.9 x 10²⁸ Ag atoms / 6.023 x 10²³ Ag atoms/mole Ag

                                    = 1.145608501 x 10⁵ moles Ag (calculator answer)

                                    = 1.2 x 10⁵ moles Ag (2 sig. figs.)

6 0
2 years ago
Read 2 more answers
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