Question

please give the correct answer urgent​

Answer 1

1) all of this have 4 significant figures

2)12g

3) option D

4) option B

5) option D

6 ) magnetic susceptibility

7) 17 grams of ammonia

9)The SI unit for pressure is the pascal (Pa), equal to one newton per square metre (N/m2, or kg·m−1·s−2

10) Molality is a property of a solution and is defined as the number of moles of solute per kilogram of solvent. The SI unit for molality is mol/kg. A solution with a molality of 3 mol/kg is often described as “3 molal” or “3 m.” However, following the SI system of units, mol/kg or a related SI unit is now preferred.