if a sphere of lead and a sphere of aluminium are both lowered into water?
405523
If the spheres are of same volume, their apparent loss of mass will be the same.\n\nIf the spheres are of same mass, Aluminium sphere's apparent loss of mass will be more.
1143443
Able to be dissolved by water.
187607
The density of water is about 100 times the density of any gas .\nSo the gas will be lifted. (Archimedes law).\nBasicly the gravity energy decreases.
762941
The change in heat = specific heat * mass * change in temperature (Q=C*g*ΔT).\n\nAssuming that the Aluminum also ends at 28.3 °C, then the change in heat for the Aluminum is\n\n0.0902 J/g°K * 35.7 g * (28.3°-81.9°)\n\nThe above will be negative as heat was lost from the Aluminum.  The change in heat for the water is\n\n4.184 J/g°K * 75.0 g * (28.3°-24.9°)\n\nThe above will be positive as the water gained heat.\n\nThe Heat Capacity of the calorimeter is the difference between the heat lost by the Aluminum and that gained by the water divided by the change in temperature (which is the same as for the water (28.3°-24.9°).
1016946
Pb(SO4)2\nPbSO4  is lead (II) sulfate!
1035950
The basic check is: measure the mass, divide by the volume of water displaced, check that the density is correct. After that you should still do a chemical analysis to make sure there aren't other heavy metals, like uranium or lead mixed in.
444550
The difference in solubility of the components allows for separation.  I don't remember the specifics, but that is the reason.  Water will not have a big enough difference.
689832
The object must be less dense than the fluid to float, and more dense to sink.  If it is exactly equal density, then it can be suspended.
1117721
No, there is no Lead (Pb) in water (H2O)
648278
a tab floats and stops the water
383803
hey! the force acting on these spheres is the buoyant force.  buoyant force is equal to the weight of the liquid displaced by the immersed object.As in this case the weight of both spheres is the same [m*g i.e(1kg*9.8m/s2)] the buoyant force will also be the same.hence none of them "appears to lose" and both appear same.get that??!
86129
Several, actually. First, surface tension of the soap holds it together. With equal pressure inside, all surface points are equally stressed outward. And the sphere is the smallest surface area available to a certain volume. Same applies to raindrops.
68685
water with salt bcoz water bcoms lighter wen alt dissolves in it ans hence its density decreases allowing it to evaporate easily
640568
The density of mercury is greater than the steel ball. Obviously the density of alcohol is less than both the ball and the mercury.
865869
Your question is hard to interpret.  Are you saying you have a solution of sodium nitrate (NaNO3) and lead (II) sulfate?  The combination looks like the result of an ionic recombination (double replacement) reaction between sodium sulfate and lead nitrate.  The lead sulfate is a solid (low solubility in water) and precipitates out.  The sodium and nitrate are spectator ions.
387399
Pb2+ + Cl- ---> PbCl2\n\nWe know that the lead in Pb(NO3)2 has to have a 2+ charge because a nitrate ion has a 1- charge, so two of them is a 2- charge.  The entire compound must have no charge, so a 2+ charge is assigned to the lead. \n\nBoth compounds Pb(NO3)2 and NaCl dissociate (they are both soluble), and because nitrate and Na+ ions are always soluble, they can be ignored in a net ionic equation.
973894
float as mercury has a density of about 13.6gm/cc and iron much lesser 7.85gm/cc. Mass is immaterial as  in a sufficient quantity of mercury even a 1000000000000kg iron ball will float