What is the answer, with the correct number of significant figures, for this problem? 4.392 g + 102.40 g + 2.51 g =?

Which of the following pairs of elements belong to the same groupa. h and he b. li and bec. c and pb d. ga and ge

What is the result of multiplying (2.5 × 1010) × (2.0 × 10-7)? a. 5.0 × 103 b. 5.0 × 10-3 c. 5.0 × 1017 d. 5.0 × 10-17

During which time interval does the object travel approximately 10 meters