Predict which pure substance has the following chemical and physical properties: white solid at room temperature, high melting point, soluble in water, highly conductive when dissolved in water, reactive with acids, and high pH.

A)
zinc oxide

B)
sodium hydroxide

C)
molecular oxygen

D)
hydrochloric acid

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b.transmitters send radio waves, and receivers capture radio waves.

a person with a mass of 106kg has a weight of 1060n

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