Density, Volume, Mass, Weight,

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• Volume of Water and Body Density

  The difference in mass is 50 kg (weight on land) - 2kg (weight in water) = 48 kg. This weight (48kg) is equal to the weight of water displaced by the person. a) what is the volume of the water displaced?

• Mass of Iridium in grams

  As density is the measure of heaviness of a matter in a constant volume, you are already taking the mass of iridium into account. Weight is mass multiplied by gravity, which is not asked for.

• Titration, solution content and molarity

  Volume, V = 20 mL density, d = 0.8668 g/mL Hence, mass of toluene, m = volume * density = V*d = 20*0.8668 = 17.336 g molecular weight of toluene, M = 92.139 g/mol Hence, number of moles involved in reaction = mass/molecular wt = m/M = 17.336

• Mass percent and Molality Problem in Solutions

  Mass is calculated using the volume and density, and molality is calculated using number of moles and weight of solvent.

• Finding the inner diameter of a shell - Interesting Problem

  Thus the mass of water displaced = density * volume = 0.001 * 82406.16 = 82.4 gm weight of water = m g = 82.4*980 cm/s^2 = 80758.0368 (*10^-5 Newton) This is equal to the weight of iron in the shell.

• Mass, Pressure and Area

  Volume of water of depth 1/12 ft spread over 435600 ft^2 area = 435600 x 1/12 = 36300 ft^3 Density of water = 62.4 lb_m/ft^3 Density = Mass/Volume => Mass = Density x Volume Additional mass on the roof due to snow fall = 62.4 x 36300 = 22.65

• Boiling point of a solution given density, molecular weight

  Now calculate the mass of solvent (water) from its volume and density. For 500 mL of water, the mass is 0.5 kg solvent.

• Density

  (a) Specific gravity = density of substance/density of water = 2.94 g per cc/1 g per cc = 2.94 (without any units, since units in numerator and denominator cancel out) (b) Specific volume = the volume divided by the mass =

• Determine the composition of a solder alloy

  Then we can set up two equations as shown below: x + y = 10.35 [Mass Equation] Since volume = mass/density, we can write x/11.4 + y/7.31 = 1 [Volume Equation] From the Mass Equation, we have y = 10.35 - x.