Brass weight

For most purposes it is sufficient to assume a density of 8.4 for brass weights, and a density of 0.0012 for air under ordinary conditions. The equation then becomes... 

Brass weights, density = 8.4 Ft or Pt-Ir weights, density = 21.5 A1 or quartz weights, density = 2.7 Gold weights, density = 17... 

The volume is determined by weighing the water, having a temperature of r°C, contained or delivered by the apparatus at the same temperature. The weight of water, w grams, is obtained with brass weights in air having a density of 1.20 mg/mL. 

A 10-mL volumetric pipet was calibrated following the procedure just outlined, using a balance calibrated with brass weights having a density of 8.40 g/cm. At 25 °C the pipet was found to dispense 9.9736 g of water. What is the actual volume dispensed by the pipet ... 

Burettes calibrated at 20°C and 25°C deliver different weights of water for each 10 ml, when weighed with standard brass weights in air at 50% relative humidity (RH) at standard atmospheric pressure, as given below ... 

A sample of benzene (D = 0 88 g/ml) weighs 25 3728 g in air with brass weights What is the weight in lacuo9... 

A chemical of density 2 50 g/ml is weighed m air with brass weights The observed weight is 0 2547 g Show by calculation that it is not necessary to make a correction of the weight to racMO if the weighing is reliable only to the... 

What weight of water at 25°C, weighed in air with brass weights, should be delivered by a 25 00 ml pipet if it is accurately graduated9... 

A crude brass weight of nominal value 100 g weighs 99 9986 g in air, with brass weights What is its true weight in vacuo7... 

Procedure Place on the left pan of the balance a calibrated 100 g brass weight and on the right pan the empty pycnometer, cleaned and dried as described above. Place on the right pan the calibrated brass weights until the pointer of the balance comes to zero. Suppose this gives the wt of 52.7879 g and the wt of pyc in air would be 100.0000 - 52.7879 = 47.2121g. Its wt in vacuo can be calcdfrom the equation ... 

Which weighs more, the brass weight or the pillow Actually, both have the same mass and weight, but the brass has a higher density because its volume is smaller. 

Besides royal gold jewelry, they made artistic brass weights, spoons, and boxes. They also worked copper, zinc, tin, lead, and nickel. They cast objects in brass by the lost wax method. In this process, shapes were carved in wax, then encased in clay and baked. The hot wax was poured out, leaving a ceramic mold. 

The density of brass weights is 8.4 and that of stainless steel weights is 7.8. A calculation with water as the object will convince you that even here the correction will amount to only about one part per thousand. 

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