# Quantitative question

A chemical company receives an order to supply 100 tonnes of strontium. The company needs to work out how much ore to process.
The ore typically contains 2% by mass of SrCO3. Calculate the mass of the ore that the company would need in order to produce 100 tonnes of strontium.

What steps would I use to work this out?
Original post by Isla-H
A chemical company receives an order to supply 100 tonnes of strontium. The company needs to work out how much ore to process.
The ore typically contains 2% by mass of SrCO3. Calculate the mass of the ore that the company would need in order to produce 100 tonnes of strontium.

What steps would I use to work this out?

Using relative masses find out the percentage of strontium in strontium carbonate.

Then calculate how much strontium carbonate would be needed to make 100 tonnes Sr.

Now multiply by 50 as ore is only 2% strontium carbonate.
Original post by charco
Using relative masses find out the percentage of strontium in strontium carbonate.

Then calculate how much strontium carbonate would be needed to make 100 tonnes Sr.

Now multiply by 50 as ore is only 2% strontium carbonate.

I don't understand why you multiplied by 50 can you explain that part furthur