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Maru [420]
3 years ago
9

How many moles are there in 2.30 x 1024 atoms of silver?

Chemistry
1 answer:
Sunny_sXe [5.5K]3 years ago
5 0

Answer:

Step 1 should be convert atoms to moles (n). Step 2 should be convert moles (n) to mass (m).

Step 1

Use dimensional analysis to convert the number of atoms to moles.

1 mole atoms = 6.022 × 10²³ atoms

n(Ag) = 2.3 × 10²⁴ Ag atoms × (1 mol Ag/6.022 × 10²³ Ag atoms) = 3.8193 mol Ag

Step 2

Convert the moles of Ag to mass.

mass (m) = moles (n) × molar mass (M)

n(Ag) = 3.8193 mol Ag

M(Ag) = atomic weight on the periodic table in g/mol = 107.868 g Ag/mol Ag

m(Ag) = 3.8193 mol × 107.868 g/mol = 412 g Ag = 410 g Ag rounded to two significant figures

The mass of 2.3 × 10²⁴ Ag atoms is approximately 410 g.

Explanation:

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Answer:

K.E = 25 J

Explanation:

Given data:

Mass of ball = 0.5 g

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Now we will put the values in formula.

K.E = 1/2 mv²

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3 0
3 years ago
Queston
dmitriy555 [2]

Answer:

C

Explanation:

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4 moles of KOH yields;

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So option c is correct

5 0
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