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Using principles of inorganic chemistry, predict the stability of the following two inorganic compounds: 1) Sodium chloride (NaCl)2) Ammonium chloride (NH4Cl) Briefly explain the factors contributing to the stability of each compound based on their structures and bonding.

asked Jan 30 in Inorganic Chemistry by MonteEsteban (1.8k points)

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Identify whether the following solids are ionic, covalent, or metallic: (i) NaCl, (ii) CO2, (iii) Fe, (iv) SiO2, (v) Ag. Justify your answer with proper reasoning for each compound.

asked Jan 30 in Inorganic Chemistry by JuanitaShear (2.4k points)

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1 answer 119 views

What is the concentration of lead (Pb) ions in a sample of a water source using the method of polarography?

asked Jan 30 in Analytical Chemistry by EarnestSprin (1.5k points)

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1 answer 99 views

What is the concentration of lead (Pb) ions in a given water sample using voltammetry with a reference electrode?

asked Jan 30 in Analytical Chemistry by ShaneY52932 (2.0k points)

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What is the concentration of lead (Pb) in a water sample, in units of micrograms per liter (µg/L), if the atomic absorption spectroscopy analysis showed an absorbance value of 0.456 at a wavelength of 283.3 nm?

asked Jan 30 in Analytical Chemistry by IDQMyles1187 (2.5k points)

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1 answer 117 views

What is the concentration of lead (Pb) in a water sample collected from a local river, and how does it compare to the maximum permissible limit set by the World Health Organization (WHO)? Determine the answer using atomic absorption spectroscopy and provide a detailed report including instrumental parameters, experimental procedure, and results.

asked Jan 30 in Analytical Chemistry by ZellaSeamon3 (1.6k points)

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1 answer 112 views

What is the concentration of lead (Pb) in a water sample collected from a industrial site using atomic absorption spectroscopy?

asked Jan 30 in Analytical Chemistry by DevonHamlett (2.3k points)

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1 answer 135 views

What is the concentration of lead (Pb) in a soil sample collected from a playground using X-ray fluorescence spectroscopy?

asked Jan 30 in Analytical Chemistry by AsaYty57562 (2.1k points)

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1 answer 107 views

What is the concentration of lead (Pb) in a drinking water sample using cyclic voltammetry?

asked Jan 30 in Analytical Chemistry by VirgilioAbe5 (1.9k points)

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1 answer 104 views

What is the concentration of lead (Pb) and cadmium (Cd) in a water sample collected from a polluted river using atomic absorption spectroscopy?

asked Jan 30 in Analytical Chemistry by EloiseGrimm2 (1.9k points)

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1 answer 135 views

What is the concentration of iron(II) sulfate in a sample of water taken from a lake, using spectrophotometry with a known molar absorptivity of 11,300 L/mol*cm, if the absorbance of the sample is measured to be 0.423 at a wavelength of 510 nm?

asked Jan 30 in Analytical Chemistry by ZellaSeamon3 (1.6k points)

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What is the concentration of iron(II) sulfate in a 20 mL sample solution that has an absorbance of 0.45 at 562 nm, given that the molar extinction coefficient of iron(II) sulfate at that wavelength is 7,590 M^-1cm^-1?

asked Jan 30 in Analytical Chemistry by AudreaV25265 (2.0k points)

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What is the concentration of iron(II) ions in a water sample that has an absorbance of 0.55 at 510 nm when treated with a standard solution of 4.65 x 10^-5 M iron(II) sulfate using colorimetry?

asked Jan 30 in Analytical Chemistry by LawrenceMcGr (1.8k points)

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What is the concentration of iron(II) ions in a sample of water collected from a local pond using colorimetry, if the measured absorbance of the sample at 565 nm is 0.673 and the molar absorptivity of the iron(II) complex at this wavelength is 20,500 M⁻¹·cm⁻¹?

asked Jan 30 in Analytical Chemistry by MOIRoderick9 (1.8k points)

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What is the concentration of iron ions in a water sample collected from a local lake using polarography technique?

asked Jan 30 in Analytical Chemistry by ChristelIdr7 (1.7k points)

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1 answer 146 views

What is the concentration of iron ions in a sample of tap water using spectrophotometry?

asked Jan 30 in Analytical Chemistry by GlendaNester (1.8k points)

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1 answer 113 views

What is the concentration of iron in a water sample collected from a local lake using voltammetry with a standard potential of -0.44 V?

asked Jan 30 in Analytical Chemistry by RandolphWvo (1.9k points)

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1 answer 111 views

What is the concentration of iron (II) sulfate in a given solution using spectrophotometry with a known absorbance value at a wavelength of 400 nm?

asked Jan 30 in Analytical Chemistry by EleanoreOliv (1.9k points)

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1 answer 166 views

What is the concentration of iron (II) ions in a water sample, measured in mg/L, if the sample has an absorbance reading of 0.345 at a wavelength of 477 nm using a colorimeter and following the methodology of the 1,10-phenanthroline method?

asked Jan 30 in Analytical Chemistry by Calvin40083 (1.6k points)

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What is the concentration of iron (II) ions in a water sample with absorbance of 0.295 at a wavelength of 510 nm, given that the molar extinction coefficient of iron (II) ions is 11,300 M^-1cm^-1 at this wavelength? Use colorimetry to determine the solution.

asked Jan 30 in Analytical Chemistry by Diana66S829 (1.6k points)

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