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7 de jul. de 2016 · First, convert the mass of each element to moles: number of moles = mass / atomic weight. For copper, this is 1.659g / 63.546g/mol ≈ 0.0261 mol. For sulfur, this is 0.421g / 32.065g/mol ≈ 0.0131 mol.
answer. answered. a sample of copper wire with a mass of 1.659 g is heated with excess powdered sulfur until the copper has combined with the sulfur, and all the extra sulfur has been burned off. The final product (a sulfide of copper ) has a mass of 2.080 g. Calculate the empirical formula of the product, and name it.
The aim of the experiment is to measure the Young Modulus of a metal in the form of a wire. This requires a clamped horizontal wire over a pulley. This experiment can also be done with a vertical wire attached to the ceiling with a mass attached. Variables.
A sample of copper wire with a mass of 1.659 g is heated with excess powdered sulfur until the copper has combined with the sulfur, and all the extra sulfur has been burned off. The final product (a sulfide of copper) has a mass of 2.080 g. Calculate the empirical formula of the product, and name it.
Example \(\PageIndex{6}\): Deriving Number of Atoms from Mass for an Element. Copper is commonly used to fabricate electrical wire (Figure \(\PageIndex{6}\)). How many copper atoms are in 5.00 g of copper wire? Figure \(\PageIndex{6}\): Copper wire is composed of many, many atoms of Cu.
Deriving Number of Atoms from Mass for an Element Copper is commonly used to fabricate electrical wire . How many copper atoms are in 5.00 g of copper wire?
Calculate the drift velocity of electrons in a copper wire with a diameter of 2.053 mm (12-gauge) carrying a 20.0-A current, given that there is one free electron per copper atom. (Household wiring often contains 12-gauge copper wire, and the maximum current allowed in such wire is usually 20.0 A.)
