From what is phosphoric acid manufactured?
a. Anhydrous hydrogen fluoride
b. A mixture of potassium perchlorate and sulfuric acid distilled at less-than-atmospheric pressure
c. Phosphate rock, an ore containing calcium phosphate
d. Adding water to anhydrous ammonia
C
Health Professions
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________ The intradermal injection, in which a minute amount of material is injected within the top layer of skin to determine a patient's sensitivity to it, is commonly used for allergy testing
Indicate whether the statement is true or false
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Student loan debt in the United States is close to one trillion dollars and surpasses all credit card debt combined. Students or graduates who file for bankruptcy can have their student loans refinanced or forgiven altogether
A. True B. False
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