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Atomic Mass
Atomic mass is the mass of protons, neutrons, and electrons in a single specific atom.
1,752 Questions
Calculate NaCl in atomic mass?
By adding up the mass numbers of Na (23) and Cl (35 or 37). It is determined by the total of numbers of protons (11 and 17 respectively) and of neutrons (12 and 18 or 20), however it is not a sensible exercition to do, you cannot calculate anything with this figure.
What is the atomic mass of tellurium?
I want to know what the atomic mass of tellurium is......... It has not answered my question and I would like to know the answer....
What is the relative atomic mass of zinc chloride?
The relative atomic mass of zinc chloride (ZnCl2) is calculated by adding the atomic masses of its constituent elements (zinc and chlorine). The atomic mass of zinc is approximately 65.38 g/mol, and each chlorine atom has an atomic mass of about 35.45 g/mol. Therefore, the relative atomic mass of zinc chloride is around 136.28 g/mol.
What is the atomic mass for cobalt?
57 grams Florine (1 mole F/19.00 grams)(6.022 X 10^23/1 mole F)
= 1.8066 X 10^24 atoms Florine
1.8066 X 10^24 atoms (1 mole Co/6.022 X 10^23)(58.93 grams/1 mole Co)
= 176.79 grams of cobalt ( sigi figi might be 180 grams )
The atomic number of manganese is 25. The atomic weight of Mn is 54.93805 grams per mole.
See the Web Links to the left of this answer for a periodic table with more information about this element!
25
What does the graph of mass per nucleon vs atomic mass number look like?
The graph of binding energy per nucleon versus mass number is an analog of this graph, except it would be upside down. Iron, which has the highest binding energy per nucleon, would have the least mass per nucleon as you looked across the periodic table. Use the link below to see the graph of binding energy per nucleon plotted against mass number. If you "invert" this graph, you'll have yours. If any uncertainty exists as to what is going on with "variable" mass among the nucleons of different elements, use the link below to the related question and investigate why things are the way they are.
What is the reverse formula for finding average atomic mass?
To find the average atomic mass of an atom begin by finding the percentage of occurrence for each isotope of the atom and each isotopes mass (amu). Before multiplying, convert percentages to a decimal (move the decimal 2 places to the left) Then multiply each percentage of occurrence by the corresponding mass of that isotope. Do this for all isotopes. Finally, add all these together for the average atomic mass. Ex: Oxygen (3 isotopes) Percent occurrence Isotope Mass
99.759 % 15.99491 amu
.037% 16.99913 amu
.204% 17.99916 amu (.99749)(15.99491) = 15.95632 amu
(.00037)(16.99913) = .0062897 amu
(.00204)(17.99916) = .0367183 amu 15.95632+.0062897+.0367183= 15.99937 15.99937 is the average atomic mass of oxygen!
Atomic mass trends in the periodic table?
Atomic Mass increases in size as the atomic number increases. For example, hydrogen weighs about 1.01 grams per mole and it has periodic #1. Helium is atomic #2 and it has an atomic mass of 4.00 g/mol. This trend continues all the way to the last known pure element.
What are the atomic mass numbers of the twenty elements of the periodic table?
Hydrogen 1.01 Helium 4.00 Lithium 6.94 Beryllium 9.01 Boron 10.81 Carbon 12.01 Nitrogen 14.01 Oxygen 16.00 Flourine 19.00 Neon 20.18 Sodium 22.99 Magnesium 24.31 Aluminum 26.98 silicon 28.09 Phosphorus 30.97 Sulfur 32.07 Chlorine 35.45 Argon 39.95 Potassium 39.10 Calcium 40.08
What is hydrogens atomic mass?
1.0
It's 1.00794 It's 1.00794
It's 1.00794 It's 1.00794
1.001.
The atomic mass of hydrogen is 1.66x10-27 kg. It's relative atomic mass is 1. The RAM is 2 and 3 respectively in its isotopes, deuterium and tritium.
The atomic mass of hydrogen is 1.66x10-27 kg. It's relative atomic mass is 1. The RAM is 2 and 3 respectively in its isotopes, deuterium and tritium.
1.01
What is the atomic mass of zirconium?
The atomic mass of zirconium is approximately 91.224 grams per mole.
Kripton is a non metal element. Atomic mass of it is 83.80.
What is an atomic mass number?
Atomic mass and atomic number are two different things. Atomic mass is the mass of an atom compared to that of hydrogen. The atomic number is the atom's position in the periodic table. It's also the number of protons it has.
What is the atomic mass of Krypton?
The atomic mass of Krypton (Kr) is approximately 83.798 amu (atomic mass units).
Yes, atomic mass refers to the average mass of an element's atoms, including all isotopes. The value of 35.453 likely refers to the atomic mass of chlorine, which is the average mass of all naturally occurring isotopes of chlorine.
The difference between the atomic number of an element and its atomic mass?
The atomic number of an element represents the number of protons in its nucleus, which determines its position on the periodic table and its chemical properties. The atomic mass (or atomic weight) of an element reflects the average mass of its isotopes, considering both protons and neutrons. In general, the atomic number is a whole number without units, while atomic mass is usually expressed in atomic mass units (amu).
The atomic mass of an element is based upon the weighted average of the atomic masses of the naturally occurring isotopes of that element. We need to know what isotopes of a given element occur in nature, and what percentage of the natural abundance of an element each of those naturally occurring isotopes represents. What that means might be more easily seen if we just run through some examples. So let's run through some.
We have an element with 3 naturally occurring isotopes. They occur equally. That is, each one represents a third of the natural atoms, or 33 1/3 % of them. If the atomic masses of our isotopes are 17, 18 and 19, and all occur equally, then it's 17 + 18 + 19 (which equals 54) divided by 3 which is 54 divided by 3 which is 18. Our atomic mass for the element cited is 18, and that represents all the natural isotopes and the percentage in which they occur. Pretty easy.
We have an element with 4 naturally occurring isotopes. Here are their atomic masses and percent abundance: a = 46 (25%), b = 47 (50%), c = 48 (15%), and d = 49 (10%). There is a (fairly) simple process one can use to find the weighted average. Multiply the percent natural abundance times the atomic mass of each one and add them all together. Not to difficult, is it? Roll up your sleeves and let's have at it.
46 x 25% = 11.5
47 x 50% = 23.5
48 x 15% = 7.2
49 x 10% = 4.9
11.5 + 23.5 + 7.2 + 4.9 = 47.1 atomic mass units
So now we have our atomic mass for our mystery element in example two. We calculated it by determining a weighted average of the naturally occurring isotopes. And that's very important information to take to the lab where we'll be measuring (weighing) some of this stuff.
What is the atomic number atomic mass and net charge of an atom of iron?
Atomic Number:
This is the number of protons an element has.
Answer: 26
Atomic Mass:
Ignoring electrons, which are incredibly small and don't have much of an effect on the mass...
This is the number of protons plus the number of neutrons
Answer: 56 (26 protons + 30 neutrons)
Net Charge:
Protons are positive and electrons are negative. The net charge can be found by subtracting the number of electrons from the number of protons. 0 is neutral.
Answer: +3 (26 protons - 23 electrons).
The atomic mass of an atom is equal to the sum of the numbers of?
The atomic mass number of an element is the sum of the protons and neutrons in the nucleus of an atom of that element.
The relative atomic mass is the average atomic mass number of all the known isotopes of an element.
Copper can be found on the Periodic Table of Elements. Copper's symbol is Cu, and the atomic number is 29. The atomic mass is hard to find searching the Internet, but here it is. The atomic mass for Copper is 63.546, also recognized as just 63.
Atomic Number: 29
Atomic mass: 63.546, or just 63
**Note: The atomic mass for Copper and some other chemicals cannot be found on WebElements.
