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3 years ago

What is the formula for copper(ii) phosphate??

Chemistry

1 answer:

Ilia_Sergeevich [38]3 years ago

6 0

It would be Cu3(PO4)2

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Which Video game do you like the most?

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Explanation:

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The plot shows the absorbance spectra for solutions of caffeine, benzoic acid, and Mountain Dew® soda, each in 0.010 M HCl . A p

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Complete Question

The diagram of the complete question is shown on the first uploaded image.

Answer:

a) The approximate absorbance of benzoic acid at 228 nm? : A = 0.8

b) The molar absorptivity(∈)

of benzoic acid at 228 nm? : ∈ = $1.12 * 10^{4} M^{-1} cm^{-1}$

Explanation:

Looking at the absorbance spectra, we can see that the approximate absorbance of benzoic acid at 228 is 0.8.

mass concentration of benzoic acid = $8.74 \frac{mg}{L} =8.74 * 10^{-3} \frac{g}{L}$

the molar concentration of benzoic acid = (mass concentration of benzoic acid) / (molar mass of benzoic acid )

molar concentration of benzoic acid = $(8.74 *10^{-3} \frac{g}{L} ) /(122.12\frac{g}{mol} )$

molar concentration of benzoic acid = $7.157 * 10^{-5}M$

molar absorptivity (∈) of benzoic acid = (absorbance) /[ (molar concentration of benzoic acid ) × (path length) ]

∈ = (0.8) / [ ( $7.157 *10^{-5}M$ ) ×(1.00 cm)]

= $1.12 * 10^{4} M^{-1} cm^{-1}$

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3 years ago

Calculate the hydrogen-ion concentration [H+] for the aqueous solution in which [OH-] is 1 x 10-2 mol/L. Is this solution acidid

Lilit [14]

Answer:

[H⁺] = 1.0 x 10⁻¹² M.

Explanation:

[OH⁻] = 1 x 10⁻² mol/L.

∴ [H⁺] = 10⁻¹⁴/[OH⁻] = (10⁻¹⁴)/(1 x 10⁻² mol/L) = 1.0 x 10⁻¹² M.

∵ pH = - log[H⁺] = - log(1.0 x 10⁻¹² M) = 12.0.

∴ The solution is basic, since pH id higher than 7 and also the [OH⁻] > [H⁺].

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4 years ago

What is the pH of a solution that has the same number of hydrogen ions as hydroxide ions?

Alexxx [7]

Answer:

Explanation:

cuz it is trust me hope it helps though

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2 years ago

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larisa86 [58]

Packets of light energy are called photons.

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