The chief compound in marble is CaCO3. However, marble is readily attacked by acids.

[Ca2+] in normal rainwater of pH 5.0 = 0.024 M

a) Determine the molar solubility of marble (that is, [Ca2+] in a saturated solution).

b) Determine the equilibrium constant for the overall reaction that occurs when marble reacts with acid

CaCO3 (s) + H3O+ ↔ Ca2+ (aq) + HCO3- (aq) + H2O (l)

My problem is that I have been given no more information other than what is written above. I'm not sure how to go about solving it with this amount of information.

A steel sample weighing 1.000 g is dissolved in acids and treated with persulfate and periodate to oxidize Mn to MnO₄^- and Cr to Cr₂O₇^-. The solution is finally diluted to 100.00 mL in a volumetric flask. An aliquot placed in a 1.00-cm cuvette yielded an absorbance of 0.113 at 440 nm and of 1.304 at 545 nm. The absorbance for a reagent blank was 0.005 at 440 nm and 0.008 at 545 nm. Calculate the percentages (m/m) of Cr and Mn in the steel. The molar absorptivity of Cr₂O₇^- is 369 M^-1cm^-1 at 440 nm and 11 M^-1cm^-1 at 545 nm whereas that of MnO₄^- is 95 M^-1cm^-1 at 440 nm and 2350 M^-1cm^-1 at 545 nm. The molar mass of Mn is 54.94 g/mol and that of Cr is 52.00 g/mol.

1.True or false

      A. All compounds that contain hydrogen are acids..

      B. A solution with a pH of 5 has 10 times higher [H⁺] than a

      Solution with a pH of 6.

      C. SO₃ in the atmosphere is one cause of acid rain.                  

      D. Agricultural chemicals are the only cause of water pollution.

      E. One function of an auto catalytic converter is to convert CO₂ to CO

      F. The major elements in air are nitrogen and oxygen

      G As a radioactive isotope decays its half life changes.

      H. In the same size container at the same temperature, 25g of N₂ gas

                       has the same pressure as 25g of NH₃ gas..

     I    Chloroflurocarbon compounds are considered to be a prime cause of

                      ozone depletion in the stratosphere.

       J.   Beta radiation from an atom is the emission of a valence electron.

Write the dissociation reaction for the following acids in water H₂O. State whether the acid is a strong acid or a weak acid. Is the reaction reversible? Identify the acid, base, conjugate acid, and conjugate base.

State the Dissociation reaction, Strong or Weak Acid, Is it reversable, Acid, Base, Conjugate Acid, Conjugate Base for each. PLEASE SHOW WORK, AND EXPLAIN.

1. H₂CO₃

2.HCI

3. HNO₃

4. Write the equation that represents the reaction of hydrochloric acid in water.

Conjugate acid-base pair that includes hydrochloric acid:

Conjugate acid-base pair that does not include hydrochloric acid:

Does water act as an acid or a base in this reaction?

What volume of each of the following acids will react completely with 50.32 mL of 0.120 M NaOH?

(a)    0.130 M HCl
mL

(b)    0.180 M H₂SO₃ (two acidic hydrogens)
mL

(c)    0.210 M H₃PO₄ (three acidic hydrogens)
mL

(d)    0.135 M HNO₃
mL

(e)    0.255 M HC₂H₃O₂ (one acidic hydrogen)
mL

(f)    0.320 M H₂SO₄ (two acidic hydrogens)
mL

why you think your values and being self- aware of these values are an essential aspect of understanding your Ethical Responsibilities as a Human Service Professional. How does your personal values and biases impact professional applications or practice of human services.

Electron micrographs of human nerve fibers show 10-15 layers of membranous myelin sheath. Upon close examination, these membranes are particularly rich in sphingolipids specially the glycosphingolipids. What could be the reason why these types of lipids abound in human myelin?

Give one example of artificial or human influenced selection this is how we see our relation with our domesticated species. and briefly explain why is it so much easier to show the results of this kind of selection as opposed to selection in the wild with no human intervention

Briefly explain the significance of "Power to abolish all forms of human poverty and all forms of human life" in JFK's inaugural speech...? does not have to be from an economic standpoint, more from a sociological but some economic insight would be good too