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choli [55]
3 years ago
13

How many daltons is in an ion with 15 protons, 16 neutrons and 17 electrons?

Chemistry
1 answer:
Vera_Pavlovna [14]3 years ago
8 0
31  
A dalton is the same as an atomic mass unit. And an atomic mass unit is approximately the mass of a nucleon (proton or neutron) such that the mass is 1 g/mol. So in this problem you have 15 protons and 16 neutrons, so the number of daltons is 15 + 16 = 31.
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Answer:

0.0933 moles/Litre

Explanation:

We assume that the number of moles of N- used is equal to the number of moles of Nitrogen containing compounds that are generated due to the fact that the nitrogen containing compound that are produced contain only one nitrogen in each atom. As such, finding the amount of nitrogen used up explains the amount of compound formed. This can  be expressed as follows:

Energy cost = \frac{20ev}{N- atom}

Given that:

Energy = 100 W for 60 minutes

100 W = 100 J/s

           = 100 J/s × (60 × 60) seconds

           = 3.6 × 10⁵ J

Let now convert 3.6 × 10⁵ J to eV; we have:

= ( 3.6 × 10⁵  × 6.242 × 10¹⁸ )eV

= 2.247 × 10²⁴ eV

So, number of N-atom used up to form compounds will now be:

= 2.247 × 10²⁴ eV  × \frac{1}{20eV} N-atom

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To moles; we have:

= \frac {1.123*10^{23}} {6.023*10^{23}}

= 0.186 moles

However, we are expected to leave our answer in concentration (i.e in moles/L)

since we are given 2L

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3 0
3 years ago
Scientists claim that climate change is happening because Earth is warming. They
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Explanation:

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3 years ago
En el enlace covalente entre azufre y carbono (6 y 4 electrones en su ultima capa respectivamente) la molécula tendrá ?
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Answer:

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Explanation:

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