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2 years ago

Rank the following molecules (1st, 2nd, 3rd, 4th) in the order that they melt.

Chemistry

1 answer:

Daniel [21]2 years ago

6 0

Sodium chloride has the highest melting point while iodine has the least melting point.

The melting points of solid substances depends on the nature of intermolecular forces that exists in the substance. The stronger the magnitude of intermolecular forces in a substance, the higher its melting point.

The order of melting points of the solids shown in question is as follows;

1st - Sodium chloride
2nd - sucrose
3rd - paraffin
4th - Iodine

Sodium chloride has the highest melting points because it is an ionic substance. Among the molecular sucrose and paraffin, sucrose has a higher melting point than sucrose because it has a greater molar mass. Iodine, a molecular substance has the least molar mass and the least melting point in the list.

Learn more: brainly.com/question/25777663

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At-57 °C and 1 atm, carbon dioxide is in which phase? View Available Hint(s) Phase diagrams for water (Figure 1)and carbon dioxi

goblinko [34]

Answer:

Gas

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Explanation:

Let's refer to the attached phase diagram for CO₂ (not to scale).

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3 years ago

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rusak2 [61]

Answer:

Quantitative

Words, Measurement, Numbers, Charts, Instruments, Quantity, Data

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Explanation :

Quantitative Data

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Qualitative Data

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3 0

3 years ago

Place where food is stored and partially digested

Ostrovityanka [42]

Answer: Chyme

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3 years ago

How many grams of CaCl2 are needed to make 277.8g of a solution that is 31.5% (m/m) in water? Note that mass is not technically

Sveta_85 [38]

Answer: The mass of calcium chloride present in given amount of solution is 87.5 g

Explanation:

We are given:

Mass of solution = 277.8 grams

Also, 31.5 % (m/m) of calcium chloride in water. This means that 31.5 g of calcium chloride is present in 100 g of solution.

To calculate the mass of calcium chloride in the given amount of solution, we use unitary method:

in 100 g of solution, the mass of calcium chloride present is 31.5 g

So, 277.8 g of solution, the mass of calcium chloride present is $\frac{31.5}{100}\times 277.8=87.5g$

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3 years ago

The number 4012 has how many significant figures?

grandymaker [24]

Answer:

8 figures.

Explanation:

3 0

3 years ago