Have you ever made a convection cell? What about when you boil water for pasta?
What will be an ideal response?
Answer: yes. Or tea water.
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The main component of bleach is sodium hypochlorite, NaOCl, which consists of sodium ions, Na?, and hypochlorite ions, -OCl. What products are formed when this compound is reacted with the hydrochloric acid, HCl, of toilet bowl cleaner?
A. The products are NaCl, O2, and HClO2. B. The products are NaCl and HOCl. C. The products are NaOH, H2O, and Cl2. D. The products are NaOH, O2, and Cl2.
Prior to the Industrial Revolution, the concentration of carbon dioxide in the atmosphere oscillated between 180 and ____ ppm.
A. 200 B. 280 C. 350 D. 390 E. 420
Which of the following kingdoms has only a few species living in the marine environment?
A) Animalia B) Archaebacteria C) Eubacteria D) Plantae E) Protista
This type of drainage pattern forms where there are parallel, alternating layers of soft and hard rock.
A. Dendritic B. Meandering C. Radial D. Trellis