10E-2=1×10↑-2=0.01; 10E-8=1×10↑-8=0.00000001;10E-8=1×10↑-8=0.00000001;
10E-12=1×10↑-12=0.000000000001;
∴(10E-2)-(10E-8)+(10E-6)-(10E-12)
=0.01-0.00000001+0.000001-0.000000000001
=0.010000989999 (mol/L)
10E-2=1×10↑-2=0.01; 10E-8=1×10↑-8=0.00000001;10E-8=1×10↑-8=0.00000001;
10E-12=1×10↑-12=0.000000000001;
∴(10E-2)-(10E-8)+(10E-6)-(10E-12)
=0.01-0.00000001+0.000001-0.000000000001
=0.010000989999 (mol/L)