An example of a polar molecule is the:
A) water molecule
B) hydrogen molecule
C) sugar molecule
D) alcohol molecule
A) water molecule
A water molecule is an example of a polar molecule, which has unevenly distributed electrical charges. In the water molecule, the negative electrons remain closer, most of the time, near the oxygen atom in comparison to the two hydrogen atoms. Therefore, the area near the oxygen atom is usually negatively charged, whereas the area near the hydrogen atoms is usually positively charged.
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In 2000, the FDA updated laws to say that:
A) Label must state all ailments or diseases that the herbal effectively treats. B) No label can state that herbals are treatment for a specific ailment or disease. C) No herbal can be marketed unless it has been approved by the FDA as effective against either an ailment or a disease. D) Because herbals are dietary supplements, the FDA will no longer update laws that mention herbals or other alternative therapies.
How many methods of heat transfer are usually present during fires?
A. one B. two C. three D. four
The diagnostic procedure ________ pyelography is performed by injecting the contrast medium through a urethral catheter to evaluate function of the ureters, bladder, and urethra.
Fill in the blank(s) with the appropriate word(s).
Food moves along the alimentary tract by a process called _____
Fill in the blank(s) with correct word