Silver molar mass

Suppose, for example, that a bracelet contains 168 g of silver (Ag). To determine the number of moles of silver in the bracelet, divide the mass by the molar mass of Ag, which is 107.87 g/mol m 168 gAg... 

Here, m and M are the amount and the molar mass of the analyte. The coul-ometer is usually an electronic one that integrates the current during the electrolysis, although chemical coulometers, e.g. a silver coulometer and a gas coulometer, can also be used. In this method, the deposition of the analyte is not a necessary process. All substances that are electrolyzed with 100% current efficiency can be... 

Silver metal crystallizes in a face-centered cubic unit cell with an edge length of 408 pm. The molar mass of silver is 107.9 g/mol, and its density is 10.50 g/cm3. Use these data to calculate a value for Avogadro s number. 

From this mole-gram relationship come the units of molar mass, grams/mole. For example, the molar mass of silver nitrate (AgN03) is 170 grams/mole. 

A formula tells you what atoms (or ions) are present in an element or compound. So, from a formula you can find the mass of a mole of the substance, or its molar mass. The simplest formula for most elements is simply that element s symbol. For example, the symbol for silver is Ag. The molar mass of elements whose formulas are this simple equals the atomic mass of the element expressed in g/mol. So, the molar mass of silver is 107.87 g/mol. Diatomic elements have twice the number of atoms in each molecule, so their molecules have molar masses that are twice the molar mass of each atom. For example, the molar mass of Br2 molecules is two times the molar mass of Br atoms (2 x 79.90 g/mol = 159.80 g/mol). 

The molar solubility is calculated from the gram solubility and the molar mass of silver chromate (331.73 g mor ) ... 

Each mole of electrons that passes through the cell arises from the oxidation of j mol of Zn(s) (because each Zn atom gives up two electrons) and reduces 1 mol of silver ions. From the molar masses of silver and zinc, we calculate that 65.38/2 = 32.69 g of zinc is dissolved at the anode and 107.87 g of silver is deposited at the cathode. The same relationships hold if the cell is operated as an electrolytic cell, but in that case silver is dissolved and zinc is deposited. 

What is the molar mass of the elements (a) chlorine and (b) silver ... 

Estimate the Fermi energy of silver the molar mass of silver is 0.1079 kgmol , the density is 10500 kg m and each silver atom contributes one electron to the electron gas . 

The known atomic weight of silver is 107.87 amu. Thus, the molar mass (Avogadro s number of atoms) is 107.87 g/mol, and Avogadro s number, is... 

In any problem of this type where you have to calculate the mass of an atom, you can always check the vahdity of your answer by calculating the mass of a mole of atoms (the molar mass). For example, because the calculated mass of the silvCT atom in this problem is 1.791 X 10 g, the molar mass is (6.02 X 10 ) X (1.791 X 10 ) — 108 g/mol, which is the expected molar mass of silver to three significant figures. 

In this problem, molarity is the conversion factor in the second step of the Path, changing the given volume to moles of silver nitrate. Moles are then changed to mass, using molar mass as the third conversion factor. 

The silver chloride precipitate, which can be produced in a very pure form, is collected on a weighed filter crucible (Figure 18.4) and washed to remove extraneous residual salts. After drying to remove excess water, the crucible and the precipitate are weighed to get the mass of the precipitate and the percentage of chloride is calculated by stoichiometric calculation. Where the atomic mass of chloride is 35.45 g/mol and the molar mass of AgCl is 143.32 g/mol, the calculation is... 

Calculate the grams of silver using the molar mass factor that cancels mol Ag. 

In this reaction, the number of silver atoms that reacts is twice the number of sulfur atoms. When 200 silver atoms react, 100 sulfur atoms are required. However, in the actual chemical reaction, many more atoms of both silver and sulfur would react. If we are dealing with molar amounts, then the coefficients in the equation can be interpreted in terms of moles. Thus, 2 mol of silver reacts with 1 mol of sulfur to produce 1 mol of Ag2S. Because the molar mass of each can be determined, the moles of Ag, S, and AgjS can also be stated in terms of mass in grams of each. Thus, 215.8 g of Ag and 32.1 g of S react to form 247.9 g of Ag2S. The total mass of the reactants (247.9 g) is equal to the mass of product (247.9 g). The various ways in which a chemical equation can be interpreted are seen in Table 9.1. 

Find the mass of a single Ag atom. Recall that there are 6.022 X 10 atoms of silver in one molar mass of silver (107.9 g/mol). Use that as a conversion factor. 

The composition of silver oxalate is 71.02% silver, 7.91% carbon, and 21.07% oxygen. If the molar mass of silver oxalate is 303.8 g/mol, what is its molecular formula ... 

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