Suppose a group of objects were to be weighed separately on a scale and then the individual masses added together to determine the total mass of the group of objects. What would determine how many significant digits should appear in the reported total mass? Give an example of such a calculation.

CHEM 102: General Chemistry II Week 4 Spencer Kociba Drexel University Lecture 9 (01/30/2017) ● rate= concentration change over time ○ units=amount/time ○ Defined −ither in terms of the reactants or products ○ Ex. Δ[ClO where [ ] indicates concentration Δt ○ Rate= - slope of the instantaneous rate (the slope of the tangent line) ○ Reactants’ concentration over time ■ ■ Rate is negative (with positive Δt) ○ Products’ concentration over time ■ ■ Rate is positive (with positive Δt ) ○ Rates are related to stoichiome