Question

Определите массу чистого Fe2O3 в 1 т магнитного железняка, содержащего 24% примесей.

Answer 1

Найдем массу примесей: 
m(прим)  = (1000 кг * 24%)/100% = 240 кг
Чтобы найти массу чистого Fe2O3 вычтем из общей массы массу примесей:
m(чист) = m(общ) - m(прим) = 1000 кг - 240 кг = 760 кг. 

Answer 2

Calculating the Mass of Pure Fe2O3 in 1 Ton of Magnetic Iron Ore

To calculate the mass of pure Fe2O3 in 1 ton of magnetic iron ore containing 24% impurities, we can use the following steps:

1. Determine the Total Mass of the Iron Ore: - The total mass of the iron ore is given as 1 ton.

2. Calculate the Mass of Fe2O3 in the Iron Ore: - The iron ore contains 24% impurities, so the remaining percentage is the pure Fe2O3.

3. Apply the Percentage to Find the Mass of Fe2O3: - We can use the percentage of pure Fe2O3 to calculate its mass in the 1 ton of iron ore.

Calculation

The calculation involves finding 76% of 1 ton to determine the mass of pure Fe2O3 in the iron ore.

Calculation: 1 ton * 76% = 0.76 tons

Therefore, the mass of pure Fe2O3 in 1 ton of magnetic iron ore, containing 24% impurities, is 0.76 tons.