Chemistry, 22.10.2019 20:30, angel10999
"which is heavier, a pound of feathers or a pound of lead? " the answer is obvious, of course, since a pound of feathers and a pound of lead both weigh the sameāone pound. however, there is clearly something different about a small piece of lead and a large bag of feathers, even though they weigh the same. the relationship between the lead and feathers is expressed by the physical property called density. density is defined as the ratio of a substanceās mass to the volume it occupies. density (g/ml) = mass ( volume (ml) in this laboratory investigation, you will be using the physical property of density to determine the identity of different substances. you will also calculate the percent error, which is a comparison of the differences between the measured value and accepted value. percent error can be determined as follows: % error = āmeasured value ā accepted valueā x 100 accepted value objectives when you have completed this activity, you should be able to: observe the chemical and physical properties of substances to interpret the structure of and changes in matter. materials balance metric ruler 100 ml graduated cylinder 250 ml beaker rectangular solid (childās block) metal sample (fishing weight)
Answers: 3
Chemistry, 22.06.2019 05:30, smartie80
Transportation is the largest single source of air pollution in the united states. air pollution can harm the environment and human health. which technology could offer a solution to this problem? mufflers that reduce noise motors that run on electricity tires that improve gas mileage
Answers: 3
Chemistry, 22.06.2019 07:30, zamirareece17
1. list three scientific reasons cockroaches may fly.
Answers: 1
"which is heavier, a pound of feathers or a pound of lead? " the answer is obvious, of course, since...
Mathematics, 21.01.2021 21:00
Mathematics, 21.01.2021 21:00
Physics, 21.01.2021 21:00
Mathematics, 21.01.2021 21:00
Spanish, 21.01.2021 21:00