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bearhunter [10]
3 years ago
12

Explain how the isotopes and ions of an atom differ.

Chemistry
1 answer:
natali 33 [55]3 years ago
4 0

Answer:

istopes is a situation in which each of two or more forms of same element that contain equal number of proton....while ions of an atoms are with extra electrons or missing electrons so they tends to differ

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Consider the following four pairs of molecules. You may use 1H-NMR, 13C-NMR, or IRspectroscopyto differentiate the structures, b
GREYUIT [131]

Answer:

The question is incomplete. The structures were not added to the question. Find attached of the structure and the given answer.

Explanation:

See the attached file for explanation

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3 years ago
Which of the following sentences represents a physical change? sugar dissolves in coffee iron rusts gasoline burns in an engine
MAXImum [283]

<u><em>Answer:</em></u>

  • Physical changes example is sugar dissolves in coffee
  • Chemical changes examples are iron rusts, gasoline burns in an engine and a candle burns.

Explanation.

  • Physical changes depend on only physical state, not on composition, which can be separated by physical means while chemical changes depend on composition and only separated by chemical ways.
  • As in case of iron rusting, gasoline and candle burn are cases chemical changes bcz they convert into another substance whose composition is different from other as compare to sugar which has same composition in coffee ,only state is changed from solid to liquid.

6 0
3 years ago
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During the extraction of iron from iron oxide in the Blast Furnace state the function of limestone​
Brrunno [24]

Answer:

Redox reactions are involved in the extraction of metals from their ores, eg extracting iron by reduction within the blast furnace. Transition metals have high melting points and densities, form coloured compounds and act as catalysts

3 0
3 years ago
What would happen if you didn't have chemical energy in your body
astra-53 [7]
You would die. Nothing would work. Every single cell in your entire body would fail, and you would cease living in an instant.
8 0
4 years ago
How many moles are in a 275g sample of K2CrO3
Marrrta [24]

Answer:

There are approximately 1.54 moles  in a 275 g sample of K_2CrO_3.

Explanation:

To find out number of moles, fistly we have to calculate molecular mass of K_2CrO_3.

There are 2 atoms of Potassium 1 atom of Chromium and 3 atoms of oxygen in the given compound.

For molecular mass we have to add the value of mass of 2 atoms of Potassium with mass of 1 atom of Chromium and with mass of 3 atoms of oxygen.

Atomic mass of Potassium = 39

Atomic mass of Chromium = 52

Atomic mass of Oxygen = 16

Now,

Molecular mass of K_2CrO_3 = 2\times 39+52+3\times 16=78+52+48=178\ gm

The molecular mass of a compound is the mass of compound in one mole.

To find out the number of moles, we have to divide given mass of compound by its molecular mass.

Number\ of\ moles=\frac{given\ mass}{molecular\ mass}

Number\ of\ moles=\frac{275}{178}= 1.54

Hence the number of moles in 275 gm of K_2CrO_3 is 1.54.

8 0
3 years ago
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