# Portland cement contains 61 % calcium oxide. Calculate the mass of calcium oxide and the mass of the rest of the components in kg if the mass of a Portland cement sample is 50 tons.

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Portland cement contains 61 % calcium oxide. Calculate the mass of calcium oxide and the mass of the rest of the components in kg if the mass of a Portland cement sample is 50 tons.

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Step 1

One ton is equal to 907.185 kgs.

The conversion factor is  (1ton/907.185 kgs )  or  (907.185 kgs/1ton).

To calculation of mass of portland cement as follows:

Step 2

Percentage of calcium oxide in portland cement is 61 %.
Mass of portland cement is 45359.3 kg.

Calculate the mass of CaO is as follows:

Step 3

Calculate the mass of the rest of the components is as fo...

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