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andrezito [222]
3 years ago
13

Matt's cube, after 5 trial, had an average destiny of 7.40. g/cm what is it made of ?​

Chemistry
1 answer:
alekssr [168]3 years ago
4 0

Explanation:

5 trial, had an average destiny of 7.40. g/cm

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For each pair below, select the sample that contains the largest number of moles. Pair A 2.50 g O2 2.50 g N2
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Answer:

Explanation:

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The atoms sample with the largest number of moles since the masses are the same would be the one with lowest molar mass according the the equation below:

Number of moles = \frac{mass }{molarmass}

Atomic mass of O = 16g and N = 14g

Molar mass of O₂ = 16 x 2 = 32gmol⁻¹

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Number of moles of O₂ = \frac{2.5}{32} = 0.078mole

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