1
Chemistry, 13.06.2020 02:57, Pfaith8617
The table below gives the numbers of protons, electrons, and neutrons in four atoms.
Atom
1
Number of protons
9
19
Number of neutrons
18
19
2.
13
4
Number of electrons
9
18
110
9
19
19
19
(10
Based on the table, which atom has a charge of -1?
O 1
02
3
O4
Answers: 1
Chemistry, 22.06.2019 00:00, lilyclairehutson
Which of the following statements is true? a. elements in the last period are radioactive. b. atomic weight is the same as atomic mass. c. elements in the same group have the same number of electron shells. d. atomic number equals the number of neutrons in the nucleus of an atom.
Answers: 1
Chemistry, 22.06.2019 19:30, Sumitco9578
Anurse used a 0.02-mg/l solution of disinfection to clean a patients wound. what is the concentration of the solution expressed as a percentage?
Answers: 1
Chemistry, 22.06.2019 21:30, imalexiscv
Plzz a sample of table sugar (sucrose, c12h22o11) has a mass of 7.801 g. ● a) calculate the number of moles of c12h22o11 in the sample b) calculate the number of moles of each element in c12h22o11 (number of moles of c, number of moles of h & number of moles of o) in the sample. (use your answer from part a as your starting point.) show your work and highlight your final answer. calculate the number of atoms of each element in c12h22o11 (number of atoms of c, number of atoms of h & number of atoms of o) in the sample. (use your answers from part b as your starting for each element.) show your work and highlight your final answer.
Answers: 1
The table below gives the numbers of protons, electrons, and neutrons in four atoms.
Atom
1
1
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