answer 6 - 1 - 7 - 8 please

Q2: What is the numerical value of each unit in terms of the base unit? (For example, 1L=0.000001L.) 1ng b- 1nm c- 1s d- 1ML Q3: How many significant figures does each number contain? 34.08 b. 0.0054 c. 260.00 d. 260 Q4: Round off each number to three significant figures. a. 1.2735 b. 0.00253622 c. 3,836.9 Q5: Carry out each calculation and give the answer using the proper number of significant figures. a. 3.810.046 b-120.085/106 Q6: While on a diet, a woman lost 3.52lb the first week, 2.2lb the second week, and 0.59lb the third week. How much weight did she lose in all? Q7: Write each number in scientific notation: (a) 2,500 (b) 0.036 Q8: Convert each number to its standard form. a. 6.5103 b. 3.780102 c. 2.221106 d. 3.26105