A pound is approximately 0.45 kilogram. A person weighs 87 kilograms. What is the persons weight, in pounds, when expressed to the correct number of significant figures.

To work it out you’d go

87 ÷ 0.45
= 193.333… lbs

i don’t know how many significant figures you have to do but if it’s 3 significant figures then the answer is 193lbs

lbs = pounds

Using dilution equationm1v1 =m2v2 ; where m1 and m1 are the intiial and final concentration, and v1 and v2 are the initial and final volume.5  × 5 m = 8 l  × m2m2 = 25/8 = 3.125 mtherefore; the resulting molarity is 3.125 m