Density (how many pounds one cubic foot of a substance weighs) is found by dividing 1 by the specific volume (how many cubic feet are occupied by one pound).
Using your numbers, that works out to 1/.001865=536 Pounds per cubic foot.
This however is incorrect, since the specific volume of re brass is actually .001825 cu ft/lb., making the correct answer 548 lbs./cu ft.
Question 12 from Unit 2 of Bill Whitman's text book, Refrigeration and Air Conditioning Technology, which you must be using was written wrong.
Sincerly,
Mr. Wise's RF100 Class
First, two things. 1) Since brass is a solid at standard temperature and pressure, it is unusual to specify its density in fluid volume units, such as gallons. 2) Brass is an alloy comprising differing amounts of different metals, so its density must be specified as a range. Brass is about 8.5 times denser than water. It has a density of 8.4 to 8.75 grams per cubic centimeter. That translates to 70 to 73 pounds per US gallon.
To solve this you need to know the relationship that density = mass divided by volume We're given a length of a side of a cube as 2.5cm so to find the volume of the cube we need to cube it (length x bredth x height) volume = (2.5)3 = 15.625cm3 so if density = mass(136.95g)/volume(15.625cm3) density = 8.7648 g cm-3 in textbooks its given as (8.3- 8.7 gcm-3) as a typical density of brass.
No, copper and brass doesnot have same density.
10 cm is not a volume10 cm3 is a volume.85g / 10 cm3 gives a density of 8.5There are some brass alloys and some bronze alloys that have a density of 8.5Brass is an alloy of zinc and copper (and often other metals).Bronze is an alloy of copper and tin (and often other metals)Many other alloys may also have such a density.
The answer is 0.5
density is the inverse of specific volume; in this case 1/.001865 = 536.2 pounds per cubic foot
a brass
8.33 gm/cm³
First, two things. 1) Since brass is a solid at standard temperature and pressure, it is unusual to specify its density in fluid volume units, such as gallons. 2) Brass is an alloy comprising differing amounts of different metals, so its density must be specified as a range. Brass is about 8.5 times denser than water. It has a density of 8.4 to 8.75 grams per cubic centimeter. That translates to 70 to 73 pounds per US gallon.
volume of a cube = (length)3 therefore volume = 23 = 8 cm3. Mass = Density * Volume = 8 * 8 = 64 g.
To solve this you need to know the relationship that density = mass divided by volume We're given a length of a side of a cube as 2.5cm so to find the volume of the cube we need to cube it (length x bredth x height) volume = (2.5)3 = 15.625cm3 so if density = mass(136.95g)/volume(15.625cm3) density = 8.7648 g cm-3 in textbooks its given as (8.3- 8.7 gcm-3) as a typical density of brass.
No, copper and brass doesnot have same density.
The density of brass can vary from 8300 to 8700 kg/m3.
Brass is an alloy which has a density which ranges between 0.0084 and 0.0087 grams per mm^3 So the mass will range between 318 times the density range.
The water will rise by the volume of the brass: volume = mass/density = 129g / 8.56 g/ml ≈ 15.1 ml → final reading ≈ 50.0 ml + 15.1 ml = 65.1 ml
The SI Unit of density is kg/m3 it is calculated by mass / volume The density of steel usually ranges between 7750 and 8050 kg/m3 The density of brass is usually between 8400 and 8730 kg/m3 The density of copper is 8940 kg/m3 at room temperature The density of aluminum is 2700 kg/m3 at room temperature So the most dense is copper, followed by brass, followed by steel, followed by aluminum
Brass refers to several different alloys whose relative density ranges from 8.4 to 8.73