How might you tell whether or not your toothpaste contained either calcium carbonate, CaCO3, or baking soda, NaHCO3, without looking at the ingredients label?
A. The toothpaste produces a salt (NaCl) when added to HCl.
B. The toothpaste bubbles when added to ammonia, such as window cleaner.
C. The toothpaste bubbles when heated.
D. The toothpaste bubbles when added to vinegar.
Answer: D
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The process of economic development means
A) encouraging population growth. B) progressively increasing the value of goods and service that a place can produce. C) finding more natural resources. D) building highways.
The design of engineering structures should take into consideration:
a. magnitude-frequency relationships of geologic events b. potential risks to life and property c. costs of construction d. all of the above
Radon is an intermediate product of uranium-238 decay.
Answer the following statement true (T) or false (F)
Thunderstorms form from what type of cloud?
A) cumulonimbus B) stratus C) cirrus D) altostratus