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Mercury (a.k.a. quicksilver) is a metallic element and a liquid at room temperature. Calculate mercury's density if a sample of mercury is found to have a mass of 441.0 g and a volume of 33.08 mL.
briefly explain the behavior that distinguishes substances that we call eletrolytes from non-electrolytes. also discuss
A 2.00 L glass soda bottle filled only with air is tightly capped at 24 C and 744.0mmHg. If the bottle is placed in water at 75C what is the pressure in the bottle?
Compute the ratio of the concentration of H 2 CO 3 to that of the HCO 3- if The pH of a bicarbonate-carbonic acid buffer is 8.50
element x crystallizes in a body-centered cubic lattice. it satomic mass is 59 amu. the edge length of a unit cell of x
When a substance melts, bonds between the particles within the solid are broken, allowing the particles to become mobile and fluid. Ionic bonds and covalent bonds between atoms are comparable in strength
Estimate the density of a sample of brass that contains 75% copper. b.if you determined the density of a sample of brass to be 8.75 g/mL, what percentage of zinc does it contain?
How much heat is required to convert 25.0g ethanol at 25C to the vapor phase at 78C? How much to convert 5.00 L?
An organic pesticide (MW 183.7) is 8.43% Cl. A 0.627 g sample containing the pesticide plus inert material containing no chloride was decomposed with metallic sodium in alcohol.
The Density of the air in the room is 1.19g/L. what is the mass, in Kg of the air in a room that measures 14.5ft x 16.5ft x 8.0ft?
what will the freezing points be of the resulting solution? kf(H2O)=1.86 C/m
What volume of solution should be dispensed from the buret to provide 5.633 mmol CO2-3 ? Answer in units of mL.
An acid with a Ka of 1 x 10-8 is titrated with NaOH, both solutions being 0.020 M. What should the Ka of the indicator be, in order to obtain the best end point
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