Question

Для приготовления бутылочного стекла берут 25 частей песка, 9 частей соды и 5 частей извести ( по массе). Сколько килограммов соды потребуется, что бы изготовить 390кг. стекла? Прошу с подробным ответом!)

Answer 1

1) 25 + 9 + 5 = 39 (частей) всего всех материалов)
2) 390 : 39 = 10 (кг) - приходится на 1 часть
3) 10 * 9 = 90 (кг) соды
Ответ: 90 кг соды потребуется для изготовления 390 кг стекла.

Answer 2

Calculating the Amount of Soda Needed to Make 390kg of Glass

To calculate the amount of soda needed to make 390kg of glass, we can use the given ratio of ingredients for making bottle glass, which is 25 parts sand, 9 parts soda, and 5 parts lime by mass.

First, let's calculate the total parts of the mixture: - Total parts = 25 (sand) + 9 (soda) + 5 (lime) = 39 parts

Now, we can calculate the proportion of soda in the mixture: - Proportion of soda = 9 parts / 39 parts = 9/39

Next, we can use this proportion to find the amount of soda needed to make 390kg of glass.

Calculation

To find the amount of soda needed: 1. Calculate the total mass of the mixture needed to make 390kg of glass. 2. Use the proportion of soda to find the amount of soda needed.

Step 1: Calculate the Total Mass of the Mixture

To find the total mass of the mixture needed to make 390kg of glass, we can use the proportion of soda to the total parts of the mixture.

Total mass of the mixture = (390kg) / (9/39) = 390kg * (39/9)

Step 2: Calculate the Amount of Soda Needed

Now that we have the total mass of the mixture, we can find the amount of soda needed using the proportion of soda.

Amount of soda needed = Total mass of the mixture * Proportion of soda

Let's calculate the amount of soda needed.

Result

The amount of soda needed to make 390kg of glass can be calculated using the given ratio of ingredients for making bottle glass.