Question

вычисли массу угля, прореагировавшего с 480 г кислорода, если в результате реакции образовалось 660 г углекислого газа

Answer 1

Ответ:

180г

Объяснение:

Всё решение в прикреплённой фотографии)

Answer 2

Calculating the Mass of Coal Reacted with Oxygen

To calculate the mass of coal reacted with oxygen, we can use the information provided in the question and apply the principles of stoichiometry.

Given: - Mass of oxygen (O2) = 480 g - Mass of carbon dioxide (CO2) produced = 660 g

The balanced chemical equation for the reaction between coal (carbon) and oxygen to produce carbon dioxide is:

C + O2 → CO2

From the balanced chemical equation, we can see that 1 mole of carbon reacts with 1 mole of oxygen to produce 1 mole of carbon dioxide.

Using the molar masses: - The molar mass of O2 = 32 g/mol - The molar mass of CO2 = 44 g/mol

We can calculate the moles of oxygen and carbon dioxide involved in the reaction:

1. Moles of O2 = Mass of O2 / Molar mass of O2 2. Moles of CO2 = Mass of CO2 / Molar mass of CO2

Then, we can use the mole ratio from the balanced chemical equation to find the moles of carbon reacted and finally calculate the mass of carbon.

Let's perform the calculations:

1. Moles of O2 = 480 g / 32 g/mol = 15 moles2. Moles of CO2 = 660 g / 44 g/mol = 15 moles Since the moles of O2 and CO2 are equal, it indicates that 15 moles of O2 reacted to produce 15 moles of CO2. Therefore, the moles of carbon reacted are also 15.

Now, we can calculate the mass of carbon: - Mass of carbon = Moles of carbon * Molar mass of carbon - Molar mass of carbon = 12 g/mol

Mass of carbon = 15 moles * 12 g/mol = 180 g

So, the mass of coal reacted with oxygen to produce 660 g of carbon dioxide is 180 grams.