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laila [671]
2 years ago
15

Which two elements have the same number of energy levels with electrons in them?(1 point)

Chemistry
1 answer:
Vladimir79 [104]2 years ago
5 0

Its B) Boron and Oxygen

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How many particles are in a 151 g sample of Li2O?
neonofarm [45]

Answer:

3.052 × 10^24 particles

Explanation:

To get the number of particles (nA) in a substance, we multiply the number of moles of the substance by Avogadro's number (6.02 × 10^23)

The mass of Li2O given in this question is as follows: 151grams.

To convert this mass value to moles, we use;

moles = mass/molar mass

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number of particles (nA) of Li2O = 5.07 × 6.02 × 10^23

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How many grams of O2(g) are needed to completely burn 15.6 g of C3H8(g)?
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3 years ago
What are 4 properties that krypton has?
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5 0
3 years ago
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