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Why is atomic number the proper basis for classification of elements?
Because Atomic number is the identity of an element , all the atoms of an element have the same atomic number while their mass numbers ma be different. for Example Argon(Ar) a noble gas and Calcium(Ca) an active metal have the same mass number 40.
What is the molar mass of Ar?
39.945
What is the difference between argon-39 and argon-40 on the periodic table?
Ar-39 has 21 neutrons Ar-40 has 22 neutrons
What argon isotope has 22 neutrons?
neutrons = 22 (for the most stable isotope of argon, Ar-40)
The molar mass of argon is 40 gmol. What is the molar mass of a gas if it effuses at 0.91 times the speed of argon gas?
graham's law (Rate 1 / rate 2) ^2 = MM2 / MM1 (Rate x / rate Ar) ^2 = MM Ar / MM x (.907)^2 = 39.9481 / MMx MMx = 39.9481 / 0.8226 Molar mass of unknown gas = 48.56 g / mole
Why is atomic number the proper basis for classification of elements?
Because Atomic number is the identity of an element , all the atoms of an element have the same atomic number while their mass numbers ma be different. for Example Argon(Ar) a noble gas and Calcium(Ca) an active metal have the same mass number 40.
How many moles are in 11.8g Ar?
The answer is 0,0719 mol.
The rate of effusion of Argon was measured to be 0.218mols at a certain temperature Calculate the rate of effusion of helium gas (Molar mass of Ar=40,Molar mass of Helium =4)?
50000
What is the molar mass of Ar?
39.945
What is the difference between argon-39 and argon-40 on the periodic table?
Ar-39 has 21 neutrons Ar-40 has 22 neutrons
What argon isotope has 22 neutrons?
neutrons = 22 (for the most stable isotope of argon, Ar-40)
What is the Ar of Carbon?
The Relative Mass (Ar) of carbon is 12. The Relative mass can be found very easily, it is the top number of the electron in the periodic table.
What is the molar mass of argon?
The molar mass of Ar = 39.948 g/mol
Which gas effuses faster at the same temperature molecular oxygen or atomic argon?
Molecular oxygen will effuse faster because: Molar Mass of O2: 32g Atomic Mass of Ar: 40g
What is the carbon and argon symbol?
Well, in science I am learning atoms. Element: Carbon ....... Symbol: C ...... Atomic Number: 6 ....... Atomic Mass: 12 Element: Argon ......... Symbol: Ar...... Atomic Number: 18 ..... Atomic Mass: 40
What are those numbers between 20 and 75 that ar multiples of 5?
20, 25, 30, 35, 40, 45, 50, 55, 60, 65, 70, 75
What army regulation is HIPAA?
AR 40-66
