subject
Chemistry, 01.09.2019 21:30 kashaallen492

Why is the atomic mass of many elements not a whole number? a. elements are unstable. b. an element may have isotopes with different numbers of neutrons. c. the atomic mass includes all the electrons. d. isotopes are always expressed in decimals.

ansver
Answers: 1

Another question on Chemistry

question
Chemistry, 21.06.2019 21:30
If i make a solution by adding 83grams of sodium hydroxide to 750ml i’d water what is the molarity of sodium hydroxide
Answers: 1
question
Chemistry, 21.06.2019 23:00
Ahypothrticalax type of ceramic material is known to have a density of 2.10 g/cm3 and a unit cell of cubic symmetry with a cell edge length of 0.57 nm. the atomic weights of the a and x elements are 28.5and 30.0 g/mol, respectively. on the basis of this information, which of the following crystal structures is (are) possible for this material: sodium chloride, cesium chloride, or zinc blende
Answers: 1
question
Chemistry, 22.06.2019 15:20
Identify arrows pointing to bonding electrons. done h-0-0-h ) intro
Answers: 3
question
Chemistry, 22.06.2019 19:30
Chlorine and water react to form hydrogen chloride and oxygen, like this: 2cl2 (g) + 2h2o (g) → 4hcl (g) + o2 (g) also, a chemist finds that at a certain temperature the equilibrium mixture of chlorine, water, hydrogen chloride, and oxygen has the following composition: compound concentration at equilibrium cl2 0.55m h2o 0.57m hcl 0.53m o2 0.34m calculate the value of the equilibrium constant kc for this reaction. round your answer to 2 significant digits.
Answers: 2
You know the right answer?
Why is the atomic mass of many elements not a whole number? a. elements are unstable. b. an element...
Questions
question
Mathematics, 09.06.2020 18:57
question
Chemistry, 09.06.2020 18:57
Questions on the website: 13722367