How many numbers of atoms in 52gram of He
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Answer:
No of moles = given mass / molar mass
[molar mass of He (helium) = 4g]
No of atoms = 52 / 4 = 13 moles
No of atoms = 13 * 6.022 * 10^23
= 78.2 * 10^23 atoms of He
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Answer:
Friend i will try to clear ur doubts, but plz mark it as brainliest and say thanks if it HELPS.
STEP 1 : GIVEN MASS OF HELIUM = 52 GM
STEP 2: MASS OF I MOLE (OR 6.022 X 10^23 ATOMS) OF HELIUM = 4 GM (WE KNOW THIS, IF U DONT' THEN I WILL SUGGEST U TO MEMORISE THIS)
STEP 3 : SO NO OF MOLES IN 52 GM OF HELIUM = 52/4 = 13
THUS NO OF ATOMS = AVOGADRO NO X NO OF MOLES
= 6.022 X 10^23 X 13= 78.286 X 10^23
PLZ BRO MARK IT AS BRAINLIEST
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