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Scrat [10]
2 years ago
15

Why is carbon-12 the only isotope with an atomic mass that is a whole number?

Chemistry
1 answer:
nignag [31]2 years ago
4 0
Fundamental properties of atoms including atomic number and atomic mass. The atomic number is the number of protons in an atom, and isotopes have the same atomic number but differ in the number of neutrons.
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How many neurons does atom in the model shown below have<br> a.2<br> b.9<br> c.10 <br> d.16
const2013 [10]
The atom in the model has 9 neurons.
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What geometry does VSEPR predict for the central atom in PF5
ddd [48]

so you can see those fluorine atoms have really spread out around the central phosphorus atom. this gives us a trigonal bi-pyramidal molecular geometry for pf5.

8 0
3 years ago
Which is the correctly balanced chemical equation for the reaction of KOH and H2SO4?
Aleks04 [339]
<span>i think the answer should be 2KOH +H2SO4=K2SO4+2H20</span>
4 0
2 years ago
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When Iodine-131 emits a β particle (beta particle), what nuclide is produced? *
k0ka [10]

When Iodine-131 emits a β particle will produce Xe-131

<h3>Further explanation </h3>

Radioactivity is the process of unstable isotopes to stable isotopes by decay, by emitting certain particles,  

  • alpha α particles ₂He⁴
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So for reaction Iodine-131 :

\tt _{53}^{131}I\rightarrow _{-1}^0\beta +_{54}^{131}Xe

5 0
3 years ago
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The molecular formula of morphine, a pain-killing narcotic, is c17h19no3. what is the molar mass? what is the mass of 6.02 x 102
kati45 [8]
<span>Molar mass is the mass of one mole of a substance, it can be a chemical element or a compound. It is a characteristic of each pure substance. We calculate it by adding up all of the masses of the atoms involved in the compound. We calculate as follows:
                   atomic mass         total mass
C     17        12.01 g/mol          204.17 g/mol
H     19          1.01 g/mol           19.19 g/mol
N      1         14.00 g/mol            14.00 g/mol
O      3         16.00 g/mol            48.00 g/mol
------------------------------------------------------------
Molar mass                           = 285.36 g/mol

</span><span>What is the mass of 6.02 x 10^24 molecules of morphine?

</span>6.02 x 10^24 molecules ( 1 mol / 6.02x10^23 molecules) ( 285.36 g/mol) = 2853.6 g morphine
5 0
3 years ago
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