4 an weak base is a substance that produces fewer

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4. A(n) weak base is a substance that produces fewer hydroxide ions in water solution than particles of the substance added. 5. Miscible means able to be mixed in any proportion, that is, infinitely soluble. 6. A(n) Brønsted-Lowry acid is a substance that donates protons, H + , in a Brønsted-Lowry acid-base reaction. 7. Any chemical change in which at least one element gains electrons, either completely or partially is reduced . 8. A(n) reducing agent is a substance that loses electrons, making it possible for another substance to gain electrons and be reduced. 9. Potential energy is a retrievable, stored form of energy an object possesses by virtue of its position or state. 10. A(n) endergonic (endogonic) change is a change that absorbs energy. 11. Specific heat capacity is the heat necessary to increase the temperature of one gram of pure substance by one kelvin (or one degree Celsius). 12. If the pH of a solution is 3.5, it is acidic (acidic, basic, or neutral). 13. Of the two forms of radiant energy, infrared and microwaves, infrared has the highest energy for its photons, and microwaves have the longest wavelength. 14. Write a complete, balanced equation for which the Δ H is the heat of formation of phosphoric acid, H 3 PO 4 (l). (4 points) ¼ P 4 (s) + 3/2 H 2 (g) + 2 O 2 (g) H 3 PO 4 (l)
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