Chemistry, 19.02.2020 18:13 ashlee7877
Protons are so much more massive than electrons that you can neglect the mass of electrons when determining the mass of an atom. True False
Answers: 2
Chemistry, 22.06.2019 22:00
Choose all the answers that apply. fluorine (f) has an atomic number of 9 and an atomic weight of 18.99. fluorine has a. 9 protons b. 10 neutrons c. 18 electrons d. an atomic mass of 19 e. at least one isotope
Answers: 1
Chemistry, 22.06.2019 22:30
Astudent pours 10.0 g of salt into a container of water and observes the amount of time it takes for the salt to dissolve. she then repeats the process using the same amounts of salt and water but this time she slowly stirs the mixture while it is dissolving. the student performs the experiment one more time but this time she stirs the mixture rapidly. the dependent variable in this experiment is: time for salt to dissolve speed of stirring amount of water mass of salt
Answers: 1
Chemistry, 22.06.2019 22:30
Calculate the concentration of all species in a 0.165 m solution of h2co3.
Answers: 1
Chemistry, 23.06.2019 01:30
Which conclusion fits the data in the table? a. heat chemically changes chocolate and margarine. b. all solids become liquid at 100Β°f. c. removing heat from a substance it to melt. d. matter may change shape when it is heated.
Answers: 1
Protons are so much more massive than electrons that you can neglect the mass of electrons when dete...
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