WebSolution: We know the atomic mass of calcium is 40. Formula to calculate number of moles = weight/atomic mass of the element. = 80/40. = 2. Hence, number of moles in calcium … WebHow many moles of helium are contained in 17.0 mL at STP? How many moles of oxygen gas are needed to produce 67.2 L of H2O (g) at STP in the presence of excess …
What is the the volume occupied by 2.34 g of carbon dioxide gas …
WebDefinition: Mole. The mole is the amount of substance of a system which contains as many elementary entities as there are atoms in 0.012 kilogram of carbon 12; its symbol is "mol." Definition: Atom. This site uses an exact value of 6.0221415 x 10 23 for Avogadro's number. This is the number of atoms in 1 mole of a chemical element. WebAnswer (1 of 2): I interpret your question this way. There are 1.41 x 10^24 silicon atoms. How many moles of silicon atoms are there? A mole of any atom includes a total number of 6.02 x 10^23 atoms. Therefore, the number of moles of silicon atoms = (1.41 x 10^24) / (6.02 x 10^23) = 2.34 mol east carolina football 2023 schedule
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WebQ: Calculate the volume, in liters, occupied by 0.170 mol of He gasUse the molar volume to calculate… A: Click to see the answer Q: 1: Determine the volume of occupied by 2.34 … WebHow much water would be formed if 3.00 mol NH3 reacted with excess oxygen gas in the following equation? Given the reaction 4NH3+ 5O2 --> 4NO + 6H2O A) 2.00 mol B) 3.00 mol C) 4.50 mol D) 6.00 mol E) None of these. 1 answer; Chemistry; asked by Petey; 753 views; According to the reaction 2Al+3H2SO4→3H2+Al2(SO4)3, the total number of … WebFor 2 moles of a gas at STP the volume will be. 2 moles ⋅ 22.4 L/mol = 44.8 L. For 0.5 moles the volume will be. 0.5 moles ⋅ 22.4 L/mol = 11.2 L, and so on. The molar volume of a gas is derived from the ideal gas law P V = nRT: P V = nRT → V = nRT P → V n = RT P. east carolina football scores