Propane : ).............................................
The mass of the product in a chemical reaction must be equal the mass of the reactants.
The empirical formula is C₇H₆O₂.
Assume that you have 100 g of the compound.
Then you have 68.84 g C and 4.962 g H.
Mass of O = (100 – 68.84 – 4.962) g = 26.20 g O.
Now, we must convert these masses to moles and find their ratios.
From here on, I like to summarize the calculations in a table.
<u>Element</u> <u>Mass/g</u> <u>Moles</u> <u>Ratio</u> <u> ×2</u> <u>Integers</u>
C 68.84 5.732 3.501 7.001 7
H 4.962 4.923 3.006 6.012 6
O 26.20 1.638 1 2 2
The empirical formula is C₇H₆O₂.
Answer:
Carbon Dioxide is a non-flammable gas that extinguishes fire by displacing oxygen
CO2s are designed for Class B and C (flammable liquid and electrical) fires only.
Consideting the definition of electrolyte, the concentration of Ba²⁺ is 0.750 M and the concentration of OH⁻ is 1.5 M.
<h3>Definition of electrolyte</h3>
An electrolyte is a substance that dissolves in water and gives rise to the formation of ions. Electrolytes can be weak or strong, depending on whether they are partially or totally ionized or dissociated in aqueous media.
A strong electrolyte is any substance that, when dissolved in water, exclusively causes the formation of ions with a practically irreversible dissolution reaction.
A weak electrolyte is a substance that, when dissolved in water, produces partial ions, with reversible reactions.
<h3>This case</h3>
The equation for dissociation is:
Ba(OH)₂ → Ba²⁺ + 2 OH⁻
You can observe that the mole ratio of Ba(OH)₂: Ba²⁺ is 1: 1 and the mole ratio of Ba(OH)₂: OH⁻ is 1: 2.
Since Ba(OH)₂ is a strong electrolyte, it dissociates completely. Then, the concentration of Ba²⁺ is 0.750 M and the concentration of OH⁻ is 2×0.750 M= 1.5 M
In summary, the concentration of Ba²⁺ is 0.750 M and the concentration of OH⁻ is 1.5 M.
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