Web3.01 mol. An iodine sample contains 2.91x10^22 atoms of iodine. What is its mass in grams? (atomic mass of I=126.9 amu) 6.13 grams. What is the mass, in grams, of one mole of diatomic hydrogen? (molar mass of H = 1.0g/mol) 2.0 grams. 6.022x10^23 molecules of a covalent compound is equal to how many moles of that compound? 1 mol. How many ... Web17 mrt. 2024 · How many moles of Na are in 42g of Na? 1 See answer Advertisement ineedhelp8337 Answer: n=m/M, so Explanation: Molar mass of Na is 22,9... so rounded …
1. How many moles of Na are in 42g of Na?2. What is the mass of …
Web10 feb. 2024 · 1.83 moles. Explanation: The question is: how many moles of "Na" are in 42 g of Na, right? 1 mole of Na = 23 g. so # mole = (1 mole / 23 g) x 42g = 1.82 moles WebGiven: Mass to mole - solute: 25 g ofNaF. Molar Mass Na : 1 x 23 = 23g/mole F : 1 x 19 = 19g/mole. Total Molar Mass: 42g/mole Mass to mole. 1 𝑚𝑜𝑙𝑒 25 g of NaF X = 0.60 moles ofNaF 42 𝑔. Moles of solute: 0.60 mole of NaF Mass to mole - solvent: 200 g of H2O Molar Mass H : 2 x 1 = 2 g/mole O : 1 x 16 = 16g/mole. Total Molar Mass ... cylinder\\u0027s on
The Mole and Avogadro
Web19 aug. 2024 · Since all the moles of C and H in CO 2 and H 2 O, respectively have to have came from the 1 gram sample of unknown, start by calculating how many moles of each element were present in the unknown sample. 0.0333mol CO 2 (1mol C/ 1mol CO 2) = 0.0333mol C in unknown. 0.599g H 2 O (1mol H 2 O/ 18.01528g H 2 O)(2mol H/ 1mol H … WebStoichiometry is a section of chemistry such involves using relationships between reactants and/or products in an chemical reaction into determine desired decimal data. In Grecian, stoikhein means … WebSolution Verified by Toppr Correct option is C) N 3− = 4.2g = 144.2moles = 0.3 moles 1 mole of N 3− contains 10N A electrons. ∴ 0.3 moles of N 3− contains 0.3×10N A electrons. =3N A electrons Was this answer helpful? 0 0 Similar questions Calculate the total number of electrons present in 18 mL of water. Medium View solution > cylinder\u0027s of