Chemistry, 24.09.2019 04:20 Jalenmiller492
The mass number of an atom is 15, and its atomic number is 7. the atom probably 8 neutrons in the nucleus. about as much mass in electrons as in protons. at least 15 electrons. 7 units of negative charge in the nucleus. 7 electrons in the nucleus.
Answers: 3
Chemistry, 22.06.2019 14:30
100 grams of molten lead (600°c) is used to make musket balls. if the lead shot is allowed to cool to room temperature (21°c), what is the change in entropy (in j/k) of the lead? (for the specific heat of molten and solid lead use 1.29 j/g⋅°c; the latent heat of fusion and the melting point of lead are 2.45 × 104 j/kg and 327°c, respectively.)
Answers: 1
Chemistry, 22.06.2019 16:50
Which of the following is an indication that a substance has undergone a chemical change? a. no new product has been formed. b. the color of the substance has not changed. c. the original constitute has not changed. d. the molecular structure has changed.
Answers: 1
Chemistry, 23.06.2019 00:10
Find the missing probability in the table below a.0.10 b.40 c.0.80 d. 0.20
Answers: 2
The mass number of an atom is 15, and its atomic number is 7. the atom probably 8 neutrons in the n...
Biology, 14.01.2020 07:31
Mathematics, 14.01.2020 07:31
Mathematics, 14.01.2020 07:31
History, 14.01.2020 07:31
Mathematics, 14.01.2020 07:31
Arts, 14.01.2020 07:31
Mathematics, 14.01.2020 07:31
English, 14.01.2020 07:31
Health, 14.01.2020 07:31
Social Studies, 14.01.2020 07:31
History, 14.01.2020 07:31
Mathematics, 14.01.2020 07:31
Mathematics, 14.01.2020 07:31
English, 14.01.2020 07:31
History, 14.01.2020 07:31