PLEASE HELP How many significant digits are in each measurement?

130000 dg
35.002 mm
3.7 x 10-3 L
1000 s

What is the temperature in degrees celsius of a substance with a tempature of 49k

Match these items. 1. coulombs __force 2. ohms __emf 3. centimeters __resistance 4. newtons __charge 5. volts __length

The first-order reaction a→2b+c has rate constant 0.538 s−1. if the initial concentration of a is 0.867 mol l−1, what is the half-life of the reaction in seconds? remember to use correct significant figures in your answer (round your answer to the nearest hundredth). do not include units in your response.