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shtirl [24]
4 years ago
12

How many atoms are there in 90.2 grams of selenium?

Chemistry
1 answer:
Neko [114]4 years ago
4 0
First calculate the moles of selenium by multiplying the mass x molar mass
90.2 × 78.96 = 7122.2 moles

Number of moles multiplied by avogadros number gives number of atoms
7122.2 × 6.022 × 10^{23} = 4.289×10^{27} atoms
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Explanation:

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WITCHER [35]

Hello!

When the final velocity is less than the initial velocity, this is deceleration

<h2>Why?</h2>

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We have,

You put scruffy can run up to 2 m/s on his fastest days scruffy has a mass of 8 kg

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6 0
4 years ago
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