SpletSolution. The correct option is A 12.044×1024. Gram atomic mass of helium = 4g. Number of moles = Given Mass Gram Atomic Mass. ∴ Number of moles in 80g = 80 4 =20. 1 mole contains 6.022×1023 atoms. ∴ Number of atoms in 20 moles of helium = 20×6.022×1023. = 12.044×1024. Suggest Corrections. Splet29. maj 2024 · Calculate the number of atoms in 100 u of He. Solution — Atomic mass of He = 4 u So, mass of one He atom = 4 u ∴ No. of atoms in 100 u of He = 100/4 = 25 He atoms. Question 14. If a mole were to contain 1× 10 24 particles, what would be the mass of (i) one mole of oxygen, and (ii) a single oxygen molecule? Solution —
Q38 describe the significance of avogadros number ans - Course …
SpletQuestion. 28. Transcribed Image Text: 28) How many atoms are in one teaspoon of salt (atoms, not molecules!)? One teaspoon of salt weighs 6 grams. 29) One can of regular … SpletBetween 1908 and 1913, Rutherford, Geiger, and Marsden ran a series of experiments where they pointed a beam of alpha particles at a thin foil of metal and, [7] using the scintillation method devised by Crookes, Elster, and Geitel, [8] [9] studied the scattering pattern of the alpha particles with the aid of a fluorescent screen. 5e激活受信账户
If 1 g of sulphur contains x atoms, calculate the number of atoms …
SpletMethane (US: / ˈ m ɛ θ eɪ n / MEH-thayn, UK: / ˈ m iː θ eɪ n / MEE-thayn) is a chemical compound with the chemical formula CH 4 (one carbon atom bonded to four hydrogen atoms). It is a group-14 hydride, the simplest alkane, and the main constituent of natural gas.The relative abundance of methane on Earth makes it an economically attractive fuel, … SpletGram molecular weight of any substance is the weight in grams of Avogadro's number, i.e., 6.022 × 10 23 molecules. ii. It is equal to the number of molecules in one mole or number of atoms in one gram atomic weight of an element. Gram atomic weight of an element is the weight of Avogadro number of atoms. iii. Splet10. apr. 2024 · The correct answer is Option 2, i.e 1.51 × 1023 The Molecular mass of Oxygen (O 2) is 32 g Number of Moles in 8g of Oxygen = 8/32 = 0.25 moles. Therefore, the number of particles/molecules = 0.25 × 6.022 × 1023 = 1.5055 × 10 23 molecules = 1.51 × 1023 Download Solution PDF Share on Whatsapp Latest NDA Updates Last updated on … 5e版本更新