Answer:
19 gram
Step-by-step explanation:
Formula of mass left after ionising: where M is original mass and n is half lives.
Using the equation:
→ 18.75
Therefore, 18.75 g left after ionising.
∵ If rounded to nearest gram then 19 gram.
0.19*percent=17.06
Percent= 89.7894736842
Answer= 89.79%
Step-by-step explanation:
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Answer:
Triangle ABC and BCD are congruent by the side side side triangle congruence theorem