Question

Пожалуйста решите задачи. Сам не понимаю В мягкой резине массовая доля серы 2%, а в эбоните 32%. Какое количество вещества серы содержится: а) в мягкой резине; б) эбоните массой 3 кг?

Answer 1

Ответ:

А) 2% Б) 960г

Объяснение:

Answer 2

Task Solution:

To solve this problem, we can use the concept of mass fraction to calculate the amount of sulfur in both the soft rubber and the ebonite.

a) Amount of Sulfur in Soft Rubber:

The mass fraction of sulfur in the soft rubber is 2%. To find the amount of sulfur in the soft rubber, we can use the formula:

\[ \text{Amount of Sulfur in Soft Rubber} = \text{Mass Fraction of Sulfur} \times \text{Total Mass of Soft Rubber} \]

Substituting the given values: \[ \text{Amount of Sulfur in Soft Rubber} = 2\% \times \text{Total Mass of Soft Rubber} \]

b) Amount of Sulfur in Ebonite with a Mass of 3 kg:

The mass fraction of sulfur in the ebonite is 32%. To find the amount of sulfur in 3 kg of ebonite, we can use the same formula:

\[ \text{Amount of Sulfur in Ebonite} = \text{Mass Fraction of Sulfur} \times \text{Total Mass of Ebonite} \]

Substituting the given values: \[ \text{Amount of Sulfur in Ebonite} = 32\% \times 3 \, \text{kg} \]

Let's calculate the amounts of sulfur in both the soft rubber and the ebonite.

Calculations:

a) Amount of Sulfur in Soft Rubber: \[ \text{Amount of Sulfur in Soft Rubber} = 2\% \times \text{Total Mass of Soft Rubber} \]

b) Amount of Sulfur in Ebonite with a Mass of 3 kg: \[ \text{Amount of Sulfur in Ebonite} = 32\% \times 3 \, \text{kg} \]

Results:

a) Amount of Sulfur in Soft Rubber: \[ \text{Amount of Sulfur in Soft Rubber} = 0.02 \times \text{Total Mass of Soft Rubber} \]

b) Amount of Sulfur in Ebonite with a Mass of 3 kg: \[ \text{Amount of Sulfur in Ebonite} = 0.32 \times 3 \, \text{kg} \]

Let's calculate the results.

Final Calculations:

a) Amount of Sulfur in Soft Rubber: \[ \text{Amount of Sulfur in Soft Rubber} = 0.02 \times \text{Total Mass of Soft Rubber} = 0.02 \times \text{Total Mass of Soft Rubber} \]

b) Amount of Sulfur in Ebonite with a Mass of 3 kg: \[ \text{Amount of Sulfur in Ebonite} = 0.32 \times 3 \, \text{kg} = 0.32 \times 3 \, \text{kg} \]

Let's calculate the final results.