The correct description for atomic weight, atomic mass , mass number, atomic number , and molar mass should be determined. Concept introduction: Periodic table represents a systematic arrangement according to element’s physical as well as chemical properties. Here, elements are represented as a two-letter symbol and are arranged in increasing order of atomic number. Periodic table contains 18 groups (columns) and 7 periods (rows). In periodic table, groups from 1-2 and 13-18 are termed as main group elements. The 10 middle groups from 3-12 are termed as transition elements . There are also 14 elements that starts with lanthanum known as lanthanides and 14 elements started with actinium are known as actinides.
The correct description for atomic weight, atomic mass , mass number, atomic number , and molar mass should be determined. Concept introduction: Periodic table represents a systematic arrangement according to element’s physical as well as chemical properties. Here, elements are represented as a two-letter symbol and are arranged in increasing order of atomic number. Periodic table contains 18 groups (columns) and 7 periods (rows). In periodic table, groups from 1-2 and 13-18 are termed as main group elements. The 10 middle groups from 3-12 are termed as transition elements . There are also 14 elements that starts with lanthanum known as lanthanides and 14 elements started with actinium are known as actinides.
Solution Summary: The author explains that periodic table represents a systematic arrangement according to element's physical and chemical properties. Atomic weight of element represents weighted average of mass of isotopes that naturally occur in nature.
The correct description for atomic weight, atomic mass, mass number, atomic number, and molar mass should be determined.
Concept introduction:
Periodic table represents a systematic arrangement according to element’s physical as well as chemical properties. Here, elements are represented as a two-letter symbol and are arranged in increasing order of atomic number. Periodic table contains 18 groups (columns) and 7 periods (rows). In periodic table, groups from 1-2 and 13-18 are termed as main group elements. The 10 middle groups from 3-12 are termed as transition elements. There are also 14 elements that starts with lanthanum known as lanthanides and 14 elements started with actinium are known as actinides.
PLEASE READ!!! I DONT WANT EXAMPLES, I DONT WANT WORDS OR PARAGRAPHS!!! PLEASE I UNDERSTAND THE BASICS BUT THIS IS AN EXCEPTION THAT EVEN THE INTERNET CANT HELP!!!!
THIS IS THE THIRD TIME I'VE SENT THOSE QUESTIONS SO PLEASE DONT RESEND THE SAME STUFF, ITS NOT HELPING ME!!!
I ALSO ALREADY TRIED TO DRAW THE MECHANISM MYSELF, SO IF ITS RIGHT PLEASE TELL ME OR TELL ME WHAT I HAVE TO CHANGE!!!
First image: I have to SHOW (DRAWING) the mechanism (with arows and structures of molecules) NOT WORDS PLEASE! of the reaction at the bottom. Also I have to show by mecanism why the reaction wouldn't work if the alcohol was primary
Second image: I have to show the mechanism (IMAGE) (with arrows and structures of the molecules) NOT WORDS PLEASE !! for the reaction on the left, where the alcohol A is added fast in one portion
HOMEWORK, NOT EXAM!!
ALL DETAILS ARE IN THE IMAGES PLEASE LOOK AT THE IMAGES, DONT LOOK AT THE AI GENERATED TEXT!!!
Write the molecular formula for a compound with the possible elements C, H, N and O that exhibits a molecular ion at M+ = 85.0899.
Exact Masses of the Most Abundant Isotope of
Selected Elements
Isotope Natural abundance (%) Exact mass
1H
99.985
1.008
12C
98.90
12.000
14N
99.63
14.003
160
99.76
15.995
Molecular formula
(In the order CHNO, with no subscripts)
Use the data below from an electron impact mass spectrum of a pure compound to deduce its structure. Draw your structure in the
drawing window.
Data selected from the NIST
WebBook,
https://webbook.nist.gov/chemistry/
m/z
Relative intensity
59
3.0
58
64
43
100
15
23
• You do not have to consider stereochemistry.
•You do not have to explicitly draw H atoms.
• In cases where there is more than one answer, just draw one.
+
n[]
85
//
?
CH4
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