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LenKa [72]
3 years ago
9

If ·X: represents the electron-dot symbol of an element, that element could be

Chemistry
1 answer:
Oksi-84 [34.3K]3 years ago
7 0

Answer:

The answer is b

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Atomic numbers of atoms of elements _____ as you read _____ along each row of the periodic table of the elements.
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Answer: mass m = M·c·V

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3 years ago
Calculate the amount of heat required to completely sublime 55.0 g of solid dry ice CO2 at its sublimation temperature. The heat
aliina [53]

Answer:

40.4 kJ

Explanation:

Step 1: Given data

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n = 55.0 g × 1 mol/44.01 g = 1.25 mol

Step 3: Calculate the heat (Q) required to sublimate 1.25 moles of CO₂

We will use the following expression.

Q = n × ΔH°sub

Q = 1.25 mol × 32.3 kJ/mol = 40.4 kJ

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2 years ago
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