Calculate the moles of FeFe in 1.17×10221.17×1022atoms of FeFe.

Express the number of moles numericall

The number of moles of Fe in 1.17*10^22 atoms Fe is 0.0194 moles

Explanation:

Step 1: Data given

Number of atoms of Fe = 1.17 * 10^22 atoms

Number of Avogadro = 6.022 *10^23

Step 2: Calculate number of moles Fe

Moles Fe = atoms Fe / number of Avogadro

Moles Fe = 1.17*10^22 atoms / 6.022*10^23 / moles

Moles Fe = 0.0194 moles

The number of moles of Fe in 1.17*10^22 atoms Fe is 0.0194 moles

1) Acidic - gastric juices pH 1, lemon juice pH 2.2, tomato juice pH 4.

2) Neutral - salt solution pH 7.

3) Alkaline - baking soda pH 9, bleach pH 13.

pH is a numeric scale used to specify the acidity or basicity of an aqueous solution.

When pH is less than seven (pH<7), solution is acidic.

When is equal seven (pH = 7), solution is neutral.  

When pH is greater than seven (pH > 7), solution is basic.