help pls

1. What are the basic units of length, mass, volume, and temperature in the SI system? 2. What decimal power do the following abbreviations represent: (a) M, (b) k, (c) m, (d) n, and (e) ? 3. What is the number of significant figures in each of the following measured quantities: (a) 351g, (b) 0.0100mL, (c) 1.010mL, and (d) 3.72103cm ? 4. What is the length in millimeters of a crystal of copper sulfate that is 0.180in. long? 5. Perform the following conversions: (a) 72.3mg to g, (b) 6.01010m to mm, and (c) 325mm to m. 6. DNA is approximately 2.5nm in length. If an average man is 5ft10in, tall, how many DNA molecules could be stacked to extend from the ground to the top of the head of an average man? 7. A liquid has a volume of 3.70L. What is its volume in mL?Incm3