1. which procedure would best allow a scientist to observe a chemical property of hydrochloric acid (HCI) solution -B

2.D

3.A

4.B

5.C

6.A

7.D

8.C

9.B

10.A

11.C

13.B

14.A

15.C

16.B

17.A

am I correct?

Suppose that three astronomical objects, 1, 2, and 3 are observed to lie on a line, and the distance from object 1 to object 3 is d. object 1 has four times the mass of object 3, and seven times the mass of object 2. find the distance between objects 1 and 2 for which the net force on object 2 is zero.