an atom of beryllium has an atomic number and a mass number of 9.
describe the numbers a...
Chemistry, 27.01.2020 18:31 nicollexo21
an atom of beryllium has an atomic number and a mass number of 9.
describe the numbers and arrangements of the protons, neutrons and electrons in this atom.
Answers: 2
Chemistry, 21.06.2019 16:30
Why should the scientific method be used to answer a question? a. it provides a way to test an idea without any bias. b. it provides a way to test a hypothesis. c. it provides a way to ensure all hypotheses are proven correct. d. it provides a way to quickly turn a hypothesis into a scientific theory.
Answers: 1
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Explain that newton first law,second law and third law of motion?
Answers: 2
Chemistry, 22.06.2019 12:30
Consider the four elements above. which one of these elements will combine with oxygen in a 1: 1 ratio?
Answers: 3
Chemistry, 22.06.2019 14:20
Which statement explains why the bonds between non metals tend to be covalent? the bonds are found to be nondirectional they have large differences in electronegativity they have small differences in electronegativity they have ions that produce an electrostatic pull
Answers: 1