Question

4.0 x 10 3 kJ/mol How many significant digits are there

Answer 1

Answer:

2

Step-by-step explanation:

4.0 has 2 significant digits.

The zeros after a non zero number are significant.

Any non zero number is significant.

0.004 has 1 significant digit.

4000 has 4 significant digits.

In your case 4.0 × 10^3 there is an exception because it is in scientific notation. So there are 2 significant digits.

hope this makes sense.

:)