Read the chemical equation. Fe2O3 + CO → Fe + CO2

If 2 moles of Fe2O3 react with 9 moles of CO, how many moles of each product are formed?

1 mole Fe and 2 moles CO2
2 moles Fe and 3 moles CO2
4 moles Fe and 6 moles CO2
6 moles Fe and 9 moles CO2

step-by-step explanation:

if you want to solve percent error follow these steps.

1. subtract the accepted value from the experimental value.

2. take the absolute value of step 1.

3. divide that answer by the accepted value.

4. multiply that answer by 100 and add the % symbol to express the answer as a percentage.

if you want to solve percent of change just do this.

1. work out the difference (increase) between the two numbers you are comparing.

2. divide the increase by the original number and multiply the answer by 100. if your answer is a negative number then this is a percentage decrease.

hope this : )

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step-by-step explanation:

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answer: 4  

the square root of 16 is 4. it is a very simple mathematic concept. a square root when a number multiplied by itself will result in a number. here, the number 16 comes when 4 is multiplied by 4. hence the square root of 16 is 4. you can always figure out a square root by the inverse operation of squaring.