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Chemistry, 13.01.2020 15:31 sofiakeogh1487
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in class worksheet 10 jan and homework 1
are
1. the universe is so large that astronomers talk about distance using a unit of length called parsec. there
3.0857 x 101 meters in a parsec. the north star, also called polaris, has been used for thousands of ye
navigational aide. the star is 133 parsecs from earth how long does it take light from polaris to reach earth
Answers: 1
Chemistry, 21.06.2019 18:00
Sylvanite is a mineral that contains 28.0% gold by mass. how much sylvanite would you need to dig up to obtain 77.0 g of gold? explain how you got your answer and the steps you took. you
Answers: 3
Chemistry, 22.06.2019 02:30
Based on the equation and the information in the table, what is the enthalpy of the reaction?
Answers: 2
Chemistry, 22.06.2019 06:30
Over the last 90 years, scientists have added to the body of evidence supporting the big bang theory. what is the latest piece of evidence discovered in 2014?
Answers: 1
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