0.05g of impure caco3 is added to 20ml of N/5 (f=1.05) HCl solution. Excess of HCl requires 30ml of N/10(f=1.15) NaOH for complete neutralization. find percentage purity of caco3

0.73 percent

answer

fusion: the energy source of stars. the energy released from the collapse of the gas into a protostar causes the center of the protostar to become extremely hot. when the core is hot enough, nuclear fusion commences. fusion is the process where two hydrogen atoms combine to form a helium atom, releasing energy.

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chemical digestion occurs in the stomach were hcl and pepsin forms chyme, the mouth in which salivary amylase breaks down starch to form bolus, and the small intestine specifically the duodenum.