Introduction to scientific investigation (kaylangan ko na po yung answer)

1) A

2) P

3) B

4) M

5) I

6) C

7) H

8) J

9) F

10) L

11) N

12) G

13) O

14) K

15) D

Here ya go friend, these should be correct, for the most part.

- lead + phosphoric acid = hydrogen + lead(ii) phosphate