Answer:
Option A: 6.23 x 1012
Step-by-step explanation:
Please check provided image.
Answer:
70
Step-by-step explanation:
all angles in a triangle add up to 180
if two sides are equal their angles are equal
180-40
140÷2
70
Answer:
3.7 or 3.71428571429
Step-by-step explanation:
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believe the answer is 8 because sulfur has 6 valence electrons and when it becomes sulfide it gains two electrons making it 6+2=8.