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masya89 [10]
4 years ago
5

How many neutrons does 85Rb have?

Chemistry
1 answer:
Leona [35]4 years ago
8 0

Answer:

Rb has two isotopes - one having 48 neutrons and the other having 50 neutrons. The atomic mass number of an isotope is the sum of the protons plus neutrons in the nucleus, so the two stable isotopes of Rb are designated 85Rb and 87Rb (their atomic mass numbers).

HOPE THIS HELPED!!!!!!!!!!!!!!! XDDDDDDDDDD

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Explanation:

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A sample of gas occupies a volume of 67.1 mL . As it expands, it does 135.3 J of work on its surroundings at a constant pressure
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Answer:

V_2=1.363x10^{-3}m^3=1363mL

Explanation:

Hello,

In this case, since the work done at constant pressure as in isobaric process is computed by:

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Thus, the final volume turns out:

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4 years ago
Of the following, which is the dominant (strongest) type of intermolecular force present in RbCl(s)?
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Answer:

B. Ionic

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In a solid crystal of RbCl, the major intermolecular forces of attraction are electrostatic forces of attraction between oppositely charged ions in the molecules of the crystalline solid.

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4 0
4 years ago
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