Question

Question.510 cc of oxygen is collected at 27°C,if for a particular use,the volume has to reduced to its original volume.find the temperature (in °C ) to which the gas has to be cooled.(pressure being constant).


Question.chlorine is the 17th element in the periodic table.calculate the relative molecular mass of sodium hypochlorite , Atomic mass of Na= 23,0=16​

Answer 1

Answer:

The atomic mass of an element is the average mass of the atoms of an element measured in atomic mass unit (amu, also known as daltons, D). The atomic mass is a weighted average of all of the isotopes of that element, in which the mass of each isotope is multiplied by the abundance of that particular isotope. (Atomic mass is also referred to as atomic weight, but the term "mass" is more accurate.)

0.9048 × 19.992 amu = 18.09 amu

0.0027 × 20.994 amu = 0.057 amu

0.0925 × 21.991 amu = 2.03 amu

20.18 amu

Explanation:

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