Carminic acid, a naturally occurring red pigment extracted from the cochineal insect, contains only carbon, hydrogen, and oxygen. It was commonly used as a dye in the first half of the nineteenth century. It is 53.66% C and 4.09% H by mass. A titration required 18.02 mL of 0.0406 M NaOH to neutralize 0.3602 g of carminic acid. Assuming that there is only one acidic hydrogen per molecule, what is the molecular formula of carminic acid?
Answer to relevant QuestionsWhat volume of each of the following acids will react completely with 50.00 mL of 0.100 M NaOH? a. 0.100 M HCl b. 0.100 M H2SO3 (two acidic hydrogens) c. 0.200 M H3PO4 (three acidic hydrogens) d. 0.150 M HNO3 e. 0.200 M ...Assign oxidation states to all atoms in each compound. a. KMnO4 b. NiO2 c. K4Fe(CN)6 (Fe only) d. (NH4)2HPO4 e. P4O6 f. Fe3O4 g. XeOF4 h. SF4 i. CO j. C6H12O6 An unknown element is a nonmetal and has a valence electron configuration of ns2np4. a. How many valence electrons does this element have? b. What are some possible identities for this element? c. What is the formula of the ...Explain the photoelectric effect. Assume that we are in another universe with different physical laws. Electrons in this universe are described by four quantum numbers with meanings similar to those we use. We will call these quantum numbers p, q, r, and s. ...
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