Q1. Read the following instruments to the correct number of significant figures. 4 "C 3 °C 2 "C 1°C Olcm 10 cm 20 cm 30 cm 40 cm 23 mL 22 ml 21 ml 20 mL Ocm 100 cm 200cm 300 cm 400 cm

Use the centimeter ruler and the gray object below to indicate how many certain and uncertain digits the length measurement should have.   Group of answer choices Number of certain digits = 3; Number of uncertain digits = 0 Number of certain digits = 3; Number of uncertain digits = 1 Number of certain digits = 2; Number of uncertain digits = 1 Number of certain digits = 2; Number of uncertain digits = 0

Add or subtract the following measurements. Be sure each answer you enter contains the correct number of significant digits. 19.770 g 0.9 g 6.50 g +1.500 g 6.50 g - 0.6 g = = 8 x10 X Undo

Add or subtract the following measurements. Be sure each answer you enter contains the correct number of significant digits. 8.927 mL + 6.77 mL = 3.570 mL + 18.8 mL = 17.51 mL 14.9 mL = 0₁ mL 0 mL mL 2⁰0 X