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Oduvanchick [21]
3 years ago
8

How many sulfur atoms are present in 100 grams of this compound? Report your answer to three significant figures.

Chemistry
1 answer:
kap26 [50]3 years ago
7 0

Answer:

1.88 × 10²⁴ atoms

Explanation:

Step 1: Given data

Mass of sulfur: 100 g

Step 2: Calculate the moles corresponding to 100 g of sulfur

The molar mass of sulfur is 32.07 g/mol. The moles corresponding to 100 g of sulfur are:

100 g × (1 mol/32.07 g) = 3.12 mol

Step 3: Calculate the number of atoms in 3.12 moles of sulfur

We will use Avogadro's number: there are 6.02 × 10²³ atoms of sulfur in 1 mole of sulfur.

3.12 mol × (6.02 × 10²³ atoms/1 mol) = 1.88 × 10²⁴ atoms

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8 0
2 years ago
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3 years ago
The fact that water requires a large amount of energy before its temperature changes is the result of
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During chemical weathering, forsterite is dissolved by the carbonic acid in rainwater. The weathering reaction is as follows:
Semenov [28]

Answer:

Keqq = 310

Note: Some parts of the question were missing. The missing values are used in the explanation below.

Explanation:

<em>Given values: ΔH° = -178.8 kJ/mol = -178800 J/mol; T = 25°C = 298.15 K; ΔS° = -552 J/mol.K; R = 8.3145 J/mol.K</em>

Using the formula ΔG° = -RT㏑Keq

㏑Keq = ΔG°/(-RT)

where ΔG° = ΔH° - TΔS°

㏑Keq = ΔH° - TΔS°/(-RT)

㏑Keq = {-178800 - (-552 * 298.15)} / -(8.3145 * 298.15)

㏑Keq = -14221.2/-2478.968175

㏑Keq = 5.73674166

Keq = e⁵°⁷³⁶⁷⁴¹⁶⁶

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4 0
3 years ago
What is the molecular formula of a compound given the molar mass of the compound is 62.18 g/mol and the empirical formula is c2h
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Hence, (C2H7) 2=C4H14
5 0
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