Chemistry

Replies / Views	Last post
All matter is composed of atoms. Started by Pea0909berry	1 Replies 66 Views	Jul 8, 2021 by mtmmmmmk
Write the symbol for the radioactive isotope phosphorus-32. Started by dejastew	1 Replies 47 Views	Jul 8, 2021 by chloejackso
Write the appropriate symbol for the species containing 18 neutrons, 17 protons, and 16 electrons. Started by storky111	1 Replies 64 Views	Jul 8, 2021 by shayla
Which statement below is true? Started by nummyann	1 Replies 47 Views	Jul 8, 2021 by underwood14
Which of these atoms has the greatest number of neutrons in its nucleus? Started by michelleunicorn	1 Replies 62 Views	Jul 8, 2021 by flexer1n1
Which of the following statements is true concerning the masses of individual Cl atoms? Started by gonzo233	1 Replies 60 Views	Jul 8, 2021 by k.lashomb
Which of the following statements is FALSE? Started by Zoey63294	1 Replies 78 Views	Jul 8, 2021 by dudman123
Which of the following represent isotopes? A: X B: X C: X D: X Started by Metfan725	1 Replies 52 Views	Jul 8, 2021 by k.lashomb
Which of the following is a correct feature of the nuclear atom proposed by Rutherford? Started by krzymel	1 Replies 82 Views	Jul 8, 2021 by ju
Which of the following elements has chemical properties similar to tellurium? Started by crazycityslicker	1 Replies 98 Views	Jul 8, 2021 by lorealeza
When decomposed chemically, 73.0 grams of a sample of HCl produce 71.0 g of Cl2 and 2.0 g of H2, ... Started by sam.t96	1 Replies 135 Views	Jul 8, 2021 by mjenn52
When a chemical reaction is carried out in a sealed container, the substances may change in color, ... Started by formula1	1 Replies 110 Views	Jul 8, 2021 by randomguy133
What mass of magnesium is necessary to make 10.5 g of magnesium bromide if 1.04 g of magnesium makes ... Started by anjilletteb	1 Replies 224 Views	Jul 8, 2021 by bd5255
What is the proper E notation for an ion having 35 protons, 36 electrons and 45 neutrons? Started by mckennatimberlake	1 Replies 52 Views	Jul 8, 2021 by connor417
What is the mass number of the most abundant form of oxygen atom? Started by stephzh	1 Replies 41 Views	Jul 8, 2021 by at
What is the isotopic atomic mass of an isotope if 9.7023 1022 atoms weighs 4.0256 g? Started by drink	1 Replies 51 Views	Jul 8, 2021 by mathjasmine
What is the element symbol for an atom that has 5 protons and 6 neutrons? Started by dejastew	1 Replies 45 Views	Jul 8, 2021 by tkempin
What is the average mass in kilograms of one atom of arsenic? Started by erika	1 Replies 52 Views	Jul 8, 2021 by izzat
There are two stable isotopes of supposium (Su). Su-191 = 190.9609 u (27.30%) Su-194 = 193.9633 u ... Started by Alygatorr01285	1 Replies 65 Views	Jul 8, 2021 by Galvarado142
The total numbers of neutrons, protons, and electrons in 31P3- are: Started by tiara099	1 Replies 78 Views	Jul 8, 2021 by guyanai
The total number of neutrons in an is ________. Started by waynest	1 Replies 62 Views	Jul 8, 2021 by strudel15
The natural abundance of calcium in the earth's crust is 3.4% by mass. How many calcium atoms are ... Started by ec501234	1 Replies 128 Views	Jul 8, 2021 by bitingbit
The following ratios of masses were obtained with a mass spectrometer: Cl/F = 1.8406, F/C = 1.5832 ... Started by Charlie	1 Replies 70 Views	Jul 8, 2021 by cdmart10
The atomic weight of chlorine is very close to 35.5. This means that: Started by drink	1 Replies 46 Views	Jul 8, 2021 by ttt030911
The atomic mass interval for carbon is given as [ 12.0096; 12.0116 ]. Which of the below statements ... Started by ahriuashd	1 Replies 45 Views	Jul 8, 2021 by tandmlomax84