Which of the following represent chemical processes? Which represent physical processes?
A). Calcium chloride dihydrate (CaCl2 * 2H2O) slowly heated in a crucible to become calcium chloride (anhydrous).
B). A hydrocarbon such as propane (C3H8) undergoes combustion to power a grill
C). A rock climber’s rope becomes frayed and turns the color of the rocks
D). A dog urinates on an air conditioner coil and the coil becomes corroded
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The atomic number, or number, is the described as the number of in the nucleus of an chemical element.
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According to the diagram, what sources contribute to the phosphorus found in soil? according to the diagram, phosphorus found in soil contributes phosphorus to what other sources?
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The volume of a single vanadium atom is 9.29×10-24 cm3. what is the volume of a vanadium atom in microliters?
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Which of the following represent chemical processes? Which represent physical processes?
A). Calciu...
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