1. 
A sample of steel made at the Bigtown Steel Works, was analyzed and found to contain 0.19% carbon (by mass). How many kilograms of this kind of steel could be made from 1.6 kg of carbon? Round your answer to the nearest hundredth if needed.


2. 
The ratio of iron atoms to chromium atoms in a water sample from the treatment pond at ZGlobe is 11 to 7. If there are 175 chromium atoms in a liter of the water, how many iron atoms are there in a liter? Round your answer to the nearest whole number if needed.


3. 
In a mixture of CaCO3 and C_{a}SO_{4} the ratio of C_{a}CO_{3} to C_{a}SO_{4} molecules is 7 to 2. If there are 16 billion molecules of C_{a}SO_{4}, how many total molecules are in the mixture?


4. 
Abigail worked overtime at the lab to perform a chemical analysis on some sludge of unknown composition. She found it to be 25.7% water by mass. If she completely dried a 132g (original mass) of the sludge, how much water was removed in the drying process? Round your answer to the nearest hundredth.


5. 
* This is a premade sheet. Use the link at the top of the page for a printable page. 

6. 
For every one million pounds of fertilizer manufactured at Bigearth, Inc., about 500 pounds are ruined by being accidentally left out in the rain. Last month, 200 pounds were ruined. Based on this information, estimate how many pounds of fertilizer were manufactured last month. Round your answer to the nearest whole number if needed.

