C.
Nuclear fission involves the high energy collision of two atomic nuclei to produce one larger nucleus; this process powers stars.
Answer:
110kg
Explanation:
Density = mass / volume
Mass = density x volume
Given
Density = 2kg/l
Volume = 55l
Mass = 2kg/l x 55l
Mass = 110 kg
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The molarity of HCL is 71mL, the H3O+ 49g, and the pH is 12.