#1. How long (in hours) will it take for light that travels at 3.00x108 m/s to cover the distance from the sun to the earth of 9.296x107 miles?
#2. What is the density (g/mL) of a cube that has equal sides of 12 inches and weighs 491 pounds? The volume of a cube can be calculated by: lxwxh. Which metal is it considering the following densities: Cu: 8.96g/cm3, Al: 2.70g/cm3, Fe: 7.87g/cm3 and Zn: 7.13g/cm3?
#3. What is the % yield of a reaction that created 65.2 grams of Ag from 70.2 grams of Cu?2AgNO3+Cu 2Ag + Cu(NO3)
#4. How much of the excess reactant remains after 39.78 grams of C8H18 is mixed with 59.3 grams of O2 in the reaction: 2C8H18 + 25O2 16CO2 + 18H2O?
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