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NARA [144]
3 years ago
7

How do you do these?

Chemistry
1 answer:
viktelen [127]3 years ago
8 0

you find them on a periodic table


You might be interested in
In a typical mass spectrum, a smaller signal is observed at a mass 1 amu higher than the molecular ion peak. Why
Nina [5.8K]

Answer:

Answer is explained below in the explanation section

Explanation:

Smaller signal is observed at a mass 1 amu because small percentage of the compound will have carbon isotope of 13C instead of 12C.

As we know, mass spectrometry is done as a small compound is first vaporized and then bombarded to ionize it. And then, those ions are accelerated forward and then at some point ions are separated and deflected by the application of magnetic field.

And finally hits the detector to give us a spectrum to read. So, in this whole procedure, there can be a small percentage of carbon isotope of 13C instead of 12C in that compound and showed in the spectrum as a smaller signal at a mass 1 amu.

8 0
3 years ago
Which is an acceptable Lewis structure for a diatomic nitrogen molecule?
Marina86 [1]
Answer:
            Acceptable Lewis structure of Diatomic Nitrogen Molecule is as follow,

                                                      :N≡N:

Explanation:
                     
The given lewis structure is acceptable because each nitrogen atom has a complete octet and and the formal charge of each nitrogen atom is zero. So those lewis structures which has zero or least formal charges are said to be more stable and acceptable. The formal charge is calculated is,

Formal Charge  =  # of Valence e⁻s - [# of non-bonded e⁻ + 1/2 # of bonded                                           e⁻]

For N,

Formal Charge  =  5 - [ 2 + 6/2]

Formal Charge  =  5 - [ 2 + 3 ]

Formal Charge  =  5 - 5

Formal Charge  =  0

Same result will come for the second N atom.
4 0
3 years ago
Susan conducts an experiment five times and gets a solution concentration of 1.9M, 2.1M, 1.8M, 1.9M, and 2.2M. The known concent
4vir4ik [10]
D they are accurate but not preci
5 0
3 years ago
How many molecules of water are there in 0.234 L of water
tankabanditka [31]

Answer:

7.82x10^24 molecules of water

Explanation:

H2O=18.015 g/mol   Avogadro's #=6.022x10^23 molecules

0.234L x 1000g/1L x 1 mol H2O/18.015 g x 6.022x10^23 = 7.82x10^23 molecules of water

3 0
3 years ago
Which of the following observations indicates that an atom has neutrons?
olganol [36]

Answer:

The correct answer is C: A radiation consisting of uncharged particles is emitted when alpha particles strike beryllium atoms.

Explanation:

Chadwick discovered neutron while experimenting with a gold foil. A stream of alpha particles produced from a polonium source was directed at beryllium target. It was noticed that some penetrating radiations were produced. These uncharged particles were called neutrons because on the charge detector these particles showed no deflection.

Their nuclear reaction is as follow.

                             ₂He + ₄Be ----------> ₀n + ₆C

Chadwick noticed that neutrons cannot ionize gases and are highly penetrating particles.

8 0
4 years ago
Read 2 more answers
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