• ### How do you calculate the initial total co2 concentration after titration.?

A marine chemistry student placed normal seawater in an open beaker at 25°C. Given that the seawater initially had a pH = 8.07 and a [H2CO3] = 9.95 micromol kg-1 and K1 = 1.42 x 10-6 and K2 = 1.16 x 10-9 are the apparent equilibrium constants for the dissociation of carbonic acid, calculate the initial TCO2 concentration (micromol kg-1) of this sample.
60 mins ago
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• ### WHAT ARE PAINKILLERS?

2 hours ago
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• ### What would happen if formaldehyde contaminated a garden? Or other preservative?

2 hours ago
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• ### What mass of oxygen will react with 13.2 g of ethane according to the following reaction? 2 C2H6 + 7 O2 → 4 CO2 + 6 H2O?

4 hours ago
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• ### What mass of carbon will react with 16.7 g of iron(III) oxide according to the following reaction? 2Fe2O3 + 3C → 4Fe + 3CO2?

4 hours ago
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• ### If 13.3 moles of Cu and 15.8 moles of HNO3 are allowed to react,?

If 13.3 moles of Cu and 15.8 moles of HNO3 are allowed to react, what is the maximum number of moles of NO that can be produced? 3 Cu + 8 HNO3 → 3Cu(NO3)2 + 2NO + 4H2O
4 hours ago
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• ### Copper crystallizes in a face-centered cubic unit cell.?

Copper crystallizes in a face-centered cubic unit cell. The density of copper is 8.96 g/cm^3. Calculate the edge length of one unit cell in picometers.
4 hours ago
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• ### How many signals would be observed in the proton decoupled 13C NMR spectrum?

4 hours ago
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• ### Chemistry?

1. Arrange the following elements in order of increasing their first ionization energy: Cl, S, Al, Ar, Si 2. Based on oxygen and phosphorus position in the periodic table, predict which one will have the more negative electron affinity. Explain.​​​​ 4. Choose the ions that are isoelectronic from the following list: ​​​... show more
5 hours ago
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• ### What is the value of the equilibrium?

What is the value of the equilibrium constant for the reaction of the weak base aniline, C6H5NH2, with HCl? C6H5NH2(aq) + H3O+(aq) equilibrium reaction arrow C6H5NH3+(aq) + H2O(ℓ) the answer is not 4.3e-10 or 2.5e-5 trust me i tried
5 hours ago
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• ### Need help with this question.?

The funnel and volumetric flask was allowed to be wet before the solution was transferred, however the cuvette could not be. Explain using the understanding of lab procedures, dilution and concentration.
5 hours ago
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• ### Need help with this question.?

Why should solutions be stoppered when not in use? What would happen if the solutions were stored without a stopper for several days? Would the absorbance change?
5 hours ago
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• ### What is the ΔrG° for the following reaction (in kJ mol-1)? 2 Al (s) + Fe2O3 (s) ⇌ Al2O3 (s) + 2 Fe (s)?

5 hours ago
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• ### Need help with this question.?

Why is it important to mix standard and diluted solutions before colorimetric analysis? How would the results differ if the solutions had not been properly mixed?
5 hours ago
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• ### What is the equilibrium constant for a reaction at temperature 76.3 °C if the equilibrium constant at 88.1 °C is 34.00?

5 hours ago
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• ### What is the equilibrium constant K for a reaction which has ΔrG° = -95.9 kJ mol-1 , valid at a temperature of 41.9 °C? ?

5 hours ago
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• ### What is ΔHsys for a reaction at 18.7 °C with ΔSsurr = -461 J mol-1 K-1 ?

5 hours ago
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• ### Calculate the solubility?

the Ksp of calcium sulfate is 7.1x10^-5 while that of calcium hydroxide is 4.68x10^-6 A) calculate the solubility of each salt B) which salt is more soluble in water?
6 hours ago
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• ### Writing an expression for solubility product constant! help?

Mercury (I) carbonate, Hg2CO3 is a salt of low solubility. When placed in water, it dissolves until an equilibrium is reached: Hg2CO3 (s) -------->2 Hg2^2+ (aq) + CO3^2- (aq) A) Wright an expression for the K_sp of Mercury (I) carbonate. B) Solubility product of Hg2CO3 is 8.9 x 10^-17. Calculate the solubility of Mercury carbonate
6 hours ago
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