Calculate the density of an object that weighs 25.8 g and has a volume 5.2 cm3, density = g/cm3. A.4.96 B.5.0 C.0.202 D.5

9. A 10.00 g piece of metal is submerged in a graduated cylinder initially containing 20.00 mL of water. With the metal in the cylinder, the level of the water is recorded as 21.40 mL. Determine the identity of the metal. a. aluminum (density = 2.70 g/mL) b. zinc (density = 7.13 g/mL) C. silver (density = 10.49 g/mL) d. gold (density = 19.32 g/mL) %3D

2. An object has a volume of 0.0012 m3 and a mass of of 2.26 kg.    Calculate the density of the object in g/cm3.

Bud N. Chemist must determine the density of a mineral sample. His five trials yield densities of 5.15 g/cm3, 4.83 g/cm3, 5.08 g/cm3, 4.97 g/cm3, 5.12 g/cm3. Independent studies found the correct density to be 5.06 g/cm3. Which of the following is incorrect? a. The mean of his analysis is 5.03 g/cm3 indicating an error of 0.03 g/cm3 from the correct density B.His data has a standard deviation of 0.017 g/cm3 C.His data has a relative standard deviation of 2.60% D. He can report his analyzed density as 5.0±0.2 g/cm3 at a 95% confidence level E. The true value (population mean) is found within the confidence interval of Bud’s work

The density of silver is 10.5 g/cm. A piece of silver that occupies a volume of 23.6 cm would have a mass of: اختر احدى الاجابات a. 248 g b. 2.25 g c. 0.445 g d. 112 g

The Sl units of the Joule are a kg? . m².5-1 Ob. b.kg - m2.52 c. kg · m d. kg2 . m e kg m-s2 Od.

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