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const2013 [10]
3 years ago
5

How many atoms are there in 0.028 grams of iron metal? 12:50 ✓

Chemistry
1 answer:
labwork [276]3 years ago
3 0

Answer:

30100000000000000000 atoms

Explanation:

Ar of Fe : 56

0.028/56 = 0.0005 moles of Fe

0.0005 * 6.02 * 10^23(Avagardro's law of constant)

= 3.01*10^20 atoms

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Answer: Physical properties

Explanation: Can be measured without changing a substance's chemical identity.

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dsp73

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21 neutrons

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How many particles are there in 5.0 moles​
grigory [225]

Answer:

3.01 × 10^24 particles

Explanation:

According to Avagadro, in one mole of a substance, there are 6.02 × 10^23 atoms or particles.

Using the formula: N = n × NA

Where;

N= number of particles or atoms

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This means that for 5 moles of a substance, there will be:

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8 0
3 years ago
Calculate the volume of a balloon that can hold 113.4 g of nitrogen dioxide, NO2 gas at STP-
Karolina [17]

Answer:

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Explanation:

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Then we<u> use the PV=nRT formula</u>, where:

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Input the data:

  • 1 atm * V = 2.465 mol * 0.082atm·L·mol⁻¹·K⁻¹ * 273 K

And <u>solve for V</u>:

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6 0
2 years ago
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Answer:

B

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6 0
3 years ago
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