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Science · Drill 92

Science practice 92

6 questions ~9 min recommended
⏱ 00:00
Score
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I notice this input contains a data table with questions that reference it, but there is no passage text with underlined portions and standalone digit markers (like "1", "2", "3", etc.) that would indicate where to place the `` and `` tags. The questions (Q1–Q6) appear to be asking about the table itself or about a separate passage text that wasn't provided. **To proceed, I need:** 1. The actual passage text (not just the table) with standalone digits marking where questions apply 2. Confirmation of which text should be underlined for each question Could you provide the complete passage that includes the underlined portions and digit markers? For example: ``` The table shows that ΔH_fus of silver 1 is greater than that of calcium... ``` Then I can render it correctly as HTML with `` and `` tags.

PASSAGE VII

The molar heat of fusion is the amount of heat necessary to melt (or freeze) 1.00 mole of a substance at its melting point at a constant pressure. The molar heat of fusion for water is 6.02 kilojoules per mole (kJ/mol).

The equation for molar heat of fusion is:

q = ΔHfus(mass/molar mass)

In this equation, q is the total amount of heat involved, ΔHfus represents the molar heat of fusion (this value is a constant for a given substance), and (mass/molar mass) represents the number of moles of a given substance.

The following table lists molar heats of fusion, boiling points, and melting points for several elements.

1. According to the passage, ΔHfus of water:

2. The energy required to melt 1.00 mole of iron at 1,535°C and constant pressure of 1 atm is:

3. According to the table, as the energy required to melt 1 mole of the given elements increases, the melting points:

4. The boiling point of potassium is 759.90°C. If potassium follows the general pattern of the other elements in the table, its heat of fusion would be:

5. Molar heat of fusion is directly related to the strength of the forces that hold molecules together; strong forces make it difficult for molecules to break away into the liquid or gaseous phase. Data in the table support the conclusion that those forces are stronger in:

6. It was hypothesized that the heat of fusion will increase as the boiling point increases. Based on the data in the table, which of the following pairs of elements support(s) this hypothesis?

I. Nickel and iron

II. Water and calcium

III. Silver and iron

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