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belka [17]
3 years ago
7

How many of the following postulates of Dalton's atomic theory are still scientifically accepted? I. All atoms of the same eleme

nt are identical. II. Compounds are combinations of different atoms. III. A chemical reaction changes the way atoms are grouped together. IV. Atoms are indestructible.
Chemistry
1 answer:
Neko [114]3 years ago
5 0
<h2>The required "options are (II), (III), and (IV)".</h2>

Explanation:

Postulates of Dalton's atomic theory which are scientifically accepted are:

  • Atoms are indestructible.
  • Compounds are combinations of different atoms.
  • A chemical reaction changes the way atoms are grouped together.

Postulates of Dalton's atomic theory which are not accepted scientifically are:

  • All atoms of the same elements are identical.

            The theory states that the atoms of the same element are identical in every aspect but it is now scientifically proved that the same element should differ in their mass which is known as isotopes.

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56.2÷6.02×10^23

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Explanation:

Divide the given mass of the atom by the mass of an Atom (the avogadro's constant) to find the number of atoms in the given mass.

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Ilia_Sergeevich [38]

Answer:

\boxed{\text{Specific heat capacity of the substance}}

Explanation:

The formula for the amount of heat absorbed by a substance is

q = mCΔT

Thus, the three factors are the

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The only factor that is on your list is

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3 0
3 years ago
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T1 = 25 C = 298.15 K (25C + 273.15K)

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V2 = ? (we are trying to find)

Next, rearrange to fit the formula

V2 = V1 x T1 / T2

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- If you need more help or futher explanation please let me know. I would be glad to help!

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