The formula for density is,
Density = mass/volume
Mass = density*volume
Mass = 7.8*4 = 31.2 g
Answer : 31.2 g
you have abat of iron and you know its volume is 4.0cm3 you also know that...
What is the volume (in cm3, cubic centimeter) of a piece of iron (density = 7.9g/cm3) that has a mass of 0.50kg?
A type of alloy is 65% by weight of iron and its density is 21.62 g/cm3. What is the volume in m3 of alloy do you need to have 25 grams iron?
the mass of rectangular bar of iron is 200 gram its dimensions
are 2 cm x 2cm x 10 cm the specific gravity of this iron bar is
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Suppose that the dipole moment associated with an iron atom of an iron bar is 1.7 × 10-23 J/T. Assume that all the atoms in the bar, which is 4.7 cm long and has a cross-sectional area of 1.4 cm2, have their dipole moments aligned. (a) What is the dipole moment of the bar? (b) What torque must be exerted to hold this magnet perpendicular to an external field of 1.4 T? (The density of iron is 7.9 g/cm3 and...
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1. You add 9.1 g of iron to 29.30 mL of water and observe that the volume of iron and water together is 30.46 mL . Calculate the density of iron. Express your answer to two significant figures with the appropriate units. 2. Since density depends on the mass and volume of an object, we need both of these values combined in the correct way to solve for density. Keep in mind that we may not be given the mass...
1. Suppose that the dipole moment associated with an iron atom of an iron bar is 1.6 × 10-23 J/T. Assume that all the atoms in the bar, which is 4.3 cm long and has a cross-sectional area of 1.5 cm2, have their dipole moments aligned. (a) What is the dipole moment of the bar? (b) What torque must be exerted to hold this magnet perpendicular to an external field of 1.2 T? (The density of iron is 7.9 g/cm3...
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Assume that you have the same volume of aluminum and 80 g of an unknown metal. What is the density of the unknown metal if the Aluminum has a mass of 19 g and a density of 2.7 g/cm3? Can you determine which type of metal it is?