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None of those!
Avogadro's number is the number of molecules in a mole of a substance. This is expressed as 6.022 141 29 E23 /mol. This is defined as the number of atoms in 12 grams of carbon12. A mole of any gas has this number of molecules. Any fraction of that mole must be divided into the number.
You express 69000 in scientific notation as 6.9 × 104
by of
To express 0.591 as a percent, multiply by 100: 0.591 × 100 = 59.1 %
I assume you mean Cl, or chlorine. Yes, it is a common reactant. Chlorine gas is highly reactive, and is actually a diatomic, so it is correct to express it as Cl2.
None of those!
It is 2x6.023 x 1023
Avogadro's number is the number of molecules in a mole of a substance. This is expressed as 6.022 141 29 E23 /mol. This is defined as the number of atoms in 12 grams of carbon12. A mole of any gas has this number of molecules. Any fraction of that mole must be divided into the number.
S(s) + 2Cl₂(g) → SCl₄(l)
To calculate the fractional abundance of Cl-37, you need to know the total abundance of all chlorine isotopes and the abundance of Cl-37 specifically. The fractional abundance of Cl-37 can be calculated by dividing the abundance of Cl-37 by the total abundance of chlorine isotopes and then multiplying by 100 to express it as a percentage.
expresar, exprimir = to express expresarse = to express oneself expreso = express (adjective) tren expreso = express train
Express (adjective) is spelled the same in French (ex/ un train express > an express train). To express (verb) is 'exprimer'.
There is no suffix in express. Ex- is the prefix in express.
an express train - luastraein, an express bus - luasbhus (m4)
To convert parts per million (ppm) to molecules per cubic centimeter, you need to know the molecular weight of the substance. Use Avogadro's number (6.022 x 10^23) and the formula: molecules/cm^3 = (ppm * density * 6.022 x 10^23) / (molecular weight * 10^6). This will give you the concentration of molecules per cubic centimeter.
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