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Svetach [21]
2 years ago
12

A compound has an empirical formula C₂H4S.

Chemistry
1 answer:
Triss [41]2 years ago
3 0
  • The atomic mass of carbon is 12.011 g/mol.
  • The atomic mass of hydrogen is 1.00794 g/mol.
  • The atomic mass of sulfur is 32.06 g/mol.

This means that the molar mass of \text{C}_{2}\text{H}_{4}\text{S} is

2(12.011)+4(1.00794)+32.06=60.11376

Dividing this by the given molar mass, we get \frac{168}{60.11376} \approx 3

So, the molecular formula is about \boxed{\text{C}_{6}\text{H}_{12}\text{S}_{3}}

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A 1.59 mol sample of Kr has a volume of 641 mL. How many moles of Kr are in a 4.41 L sample at the same temperature and pressure
Marina86 [1]

Answer:

The correct answer is 10.939 mol ≅ 10.94 mol

Explanation:

According to Avogadro's gases law, the number of moles of an ideal gas (n) at constant pressure and temperature, is directly proportional to the volume (V).

For the initial gas (1), we have:

n₁= 1.59 mol

V₁= 641 mL= 0.641 L

For the final gas (2), we have:

V₂: 4.41 L

The relation between 1 and 2 is given by:

n₁/V₁ = n₂/V₂

We calculate n₂ as follows:

n₂= (n₁/V₁) x V₂ = (1.59 mol/0.641 L) x 4.41 L = 10.939 mol ≅ 10.94 mol

5 0
2 years ago
How many elements make up this chemical compound CO2FeHN3CoBNa2
Travka [436]
Seven elements make up the compound
4 0
3 years ago
Why does the rate of a reaction increase when the concentration of reactants is increased?
leva [86]

If reactants eventually collide, there is an occurrence of reaction.

<span> 
Therefore, when there is an increase concentration of reactant, meaning to say that there are several moles of it every unit volume. An example of this is a room having hundred of people will absolutely get higher concentration compared to a room with one individual only. 

Pertaining to effective collisions, if ever there is an increase of concentration, the frequency and rate of effective collisions among reactants surges in such a way that the rate of reaction also surges. Same with passing into a room with only 1 individual compared to hundred people blind persons, you probably want to proceed to the room with several people.</span>

<span>This is the simple logic behind that scientific existence.</span>

5 0
3 years ago
In which kind of climate would frost wedging most liekly occur?
Mnenie [13.5K]
The arctic climate most likely
5 0
3 years ago
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What is the pH of a solution that has a hydroxide ion concentration of 1.0×10−9 M?
bogdanovich [222]

Answer:

\boxed{\text{pH = 5.00}}

Explanation:

Step 1. Calculate the pOH

pOH =-log[OH⁻]

pOH =-log(1.0 × 10⁻⁹)

pOH = 9.00

Step 2. Calculate the pH

pH + pOH = 14.00

pH + 9.00 = 14.00

\boxed{\textbf{pH = 5.00}}

7 0
3 years ago
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