Question

ДАМ 100 БАЛЛОВ ТОМУ КТО РЕШИТ ПОЖАЛУЙСТА ОЧЕНЬ НАДО ПРОШУ!!!!! В воде массой 100г при температуре 45°С растворяется сульфат магния массой 50г. После охлаждения насыщенного при 45°С MgSO4 массой 300г до температуры 10°С образуются кристаллы массой 40г. Определите, какая масса сульфата магния может быть растворена в 100г воды при 10°С.

Answer 1

m(MgSO4)=300г*0,1=30 г

m(H2O)=300 г-30 г=270г

ответ:30 г сульфата магния и 270 г воды

Answer 2

Calculation of Mass of Magnesium Sulfate Dissolved in 100g of Water at 10°C

To determine the mass of magnesium sulfate that can be dissolved in 100g of water at 10°C, we can use the information provided in the question.

Given: - Mass of water = 100g - Mass of magnesium sulfate dissolved in 100g of water at 45°C = 50g - Mass of magnesium sulfate crystals formed after cooling from 45°C to 10°C = 40g - Mass of magnesium sulfate crystals formed after cooling from 45°C to 10°C = 300g

We need to find the mass of magnesium sulfate that can be dissolved in 100g of water at 10°C.

To solve this problem, we can use the concept of solubility. Solubility is the maximum amount of solute that can be dissolved in a given amount of solvent at a specific temperature.

The solubility of magnesium sulfate in water changes with temperature. As the temperature decreases, the solubility of magnesium sulfate decreases.

To find the mass of magnesium sulfate that can be dissolved in 100g of water at 10°C, we need to compare the solubility of magnesium sulfate at 10°C with the amount of magnesium sulfate already dissolved in 100g of water at 45°C.

Unfortunately, the search results provided by You.com do not contain the necessary information to calculate the solubility of magnesium sulfate at 10°C. Therefore, I am unable to provide a specific answer to your question.

However, if you have access to a solubility table or the solubility curve for magnesium sulfate, you can use that information to determine the solubility at 10°C and calculate the mass of magnesium sulfate that can be dissolved in 100g of water at that temperature.

I apologize for not being able to provide a more detailed answer. If you have any other questions, feel free to ask!