Questions by JeanGertz702

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1 answer 48 views

What is the concentration of iron (II) ion in a sample of drinking water using colorimetry, if the absorbance of the sample is found to be 0.294 and the molar absorption coefficient of iron (II) complex is 10,500 M^-1 cm^-1 at the wavelength of 505 nm?

asked 6 days ago in Analytical Chemistry

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1 answer 35 views

A 0.1 M solution of ammonia (NH3) has a pH of 11.64 at room temperature. If sodium hydroxide (NaOH) is added to this solution such that the concentration of OH- ions becomes 0.01 M, what will be the new pH of the solution? (Assume that the dissociation of water can be ignored)

asked Jan 22 in Chemical equilibrium

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1 answer 27 views

What is sleep apnea?

asked Jan 13 in Psychology

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1 answer 17 views

White blood cells called what travel to areas of the body that are inflamed?

asked Jan 8 in Science

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1 answer 21 views

What category of food includes sugars, starches and fibers?

asked Jan 6 in Science

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