Lemon juice has a ph of about 2.5. assuming that the acidity of lemon juice is due solely to citric acid, that citric acid is a monoprotic acid, and that the density of lemon juice is 1.0 g/ml, then the citric acid concentration calculates to 0.5% by mass. estimate the volume of 0.0100 m naoh required to neutralize a 3.71-g sample of lemon juice. the molar mass of citric acid is 190.12 g/mol.

The volume to neutralize the sample of lemon juice is 9,76mL

Explanation:

3,71 g sample of lemon juice are:

3,71 g × = 0,01855 g of citric acid. In moles:

0,01855 g × = 9,76x10⁻⁵ moles of citric acid.

Assuming this acid is a monoprotic acid, the moles of NaOH required to neutralized the citric acid are 9,76x10⁻⁵ moles

As the molar concentration of NaOH is 0,0100 mol/L. The volume to neutralize the sample of lemon juice is:

9,76x10⁻⁵ moles × = 9,76x10⁻³L ≡ 9,76 mL

I hope it helps!

2h2o2--> 2h2o + o2

this reaction is of the spontaneous decomposition of hydrogen peroxide down into water and oxygen.

add 2 molecules of hydrogen peroxide and 2 molecules of water. since oxygen is naturally diatomic, the total number of atoms of each element is now the same on both sides of the equation so it is balanced.

this may not be entirely correct but let me know.

under a microscope, cancer cells may look very different from normal cells. they often have different sizes and some may be larger than normal while others are smaller. cancer cells are often abnormally shaped and the control centre of the cell (the nucleus) may have an abnormal appearance.

i think? ?