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irinina [24]
3 years ago
13

Isotopes are atoms of the same element that have the same chemical property but may not have the same physical properties A true

B false
Chemistry
1 answer:
Romashka-Z-Leto [24]3 years ago
7 0

Answer:

false

Explanation:

Atoms of the same element that differ in their numbers of neutrons are called isotopes. Many isotopes occur naturally. ... Different isotopes of an element generally have the same physical and chemical properties because they have the same numbers of protons and elec

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Two aqueous solutions are prepared: 1.00 m Na2CO3 and 1.00 m LiCl. Which of the following statements is true?
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Answer:

The Na_{2}CO_{3} solution has a higher osmotic pressure and higher boiling point than LiCl solution.

Explanation:

As concentrations of two aqueous solutions are same therefore we can write:

                                \Delta P\propto i , \Delta T_{b}\propto i and \pi \propto i

where \Delta P, \Delta T_{b} and \pi are lowering of vapor pressure, elevation in boiling point and osmotic pressure of solution respectively. i is van't hoff factor.

i = total number of ions generated from dissolution of one molecule of a substance (for strong electrolyte).

Here both Na_{2}CO_{3} and LiCl are strong electrolytes.

So, i(Na_{2}CO_{3})=3 and i(LiCl)=2

Hence, lowering of vapor pressure, elevation in boiling point and osmotic pressure will be higher for Na_{2}CO_{3} solution.

Therefore the Na_{2}CO_{3} solution has a higher osmotic pressure and higher boiling point than LiCl solution.

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How many moles of KCl are in 2 L of 2.5 M KCl solution?
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PLS HELP ME IN THIS QUESTION
Gnesinka [82]

Answer:

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Explanation:

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How does the structure of Ethane (C2H6) and Propane(C3H8) differ? Are they members of a Homologous series?
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