Question

How many significant digits are there
0.009000J
50400kg
6.5*10 to power of-3 mL
-6.0* 10 to power of-2 kJ mol

Answer 1

How many significant digits
9.4*10 to power of -2 mL
1900kg
0.004900J
-9.0*10 to power of-1 kJ mol

Answer 2

0.009000J has 4 significant digits.
50400kg has 3 significant digits.
6.5*10 to the power of -3 mL has 2 significant digits.
-6.0*10 to the power of -2 kJ mol has 2 significant digits.

Answer 3

9.4*10 to the power of -2 mL has 2 significant digits.
1900kg has 2 significant digits.
0.004900J has 3 significant digits.
-9.0*10 to the power of -1 kJ mol has 2 significant digits.