5.25.00 mL of 0.0250 M solution of CuSO4 was placed in 100 mL volumetric flask, diluted to the mark line and mixed. Then 5.00 mL of this solution was picked up and placed in 250 mL volumetric flask. Show how you calculate (show numbers) the final concentration of the solution.

If the density of water is 1.0 g/cm3, which of these materials would float in water, based on their densities? check all that apply. aluminum cork iron lead wax

Name the element in group 17, period 2. (periodic table)

100 grams of molten lead (600°c) is used to make musket balls. if the lead shot is allowed to cool to room temperature (21°c), what is the change in entropy (in j/k) of the lead? (for the specific heat of molten and solid lead use 1.29 j/g⋅°c; the latent heat of fusion and the melting point of lead are 2.45 × 104 j/kg and 327°c, respectively.)