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What volume of gold would be equal in mass to a piece of copper with a volume of 140.0 mL? The density of gold is 19.3g/mL; the density of copper is 8.96 g/mL.
One liter of a gas has a pressure of 150.00 kPa at 25.0°C. If the pressure increases to 600.0 kPa and the temperature to 100.0°C, what would be the new volume of the gas?
A combustion devise was used to determine the empirical formula for a compound that only contains C, H, and O. A 0.6349 g sample of the unknown produced
When the following equation is balanced, H2S + Fe(OH)3 ----> Fe2S3 + H2O the coefficient of H2S is
A 14.0-g sample of CaCl2 is dissolved in 131 g of water, with both substances at 25.0°C. Calculate the final temperature of the solution assuming no heat lost to the surroundings and assuming the solution has a specific heat capacity of 4.18 J/°C ..
Consider the by products that might be formed by E1 and/or E2 processes in the reaction of 2-methyl-2-butanol with HCl. a. Provide structures for these products
What minimum OH- concentration must be attained (for example adding NaOH) to decrease the Mg2+ concentration in a solution of Mg(NO3)2 to less than 1.1e-10 M
A 0.1000 m aqueous solution of a weak acid, HA, is 1.5% ionized. At what temperature does it freeze? Kf for water = 1.86°C/m.
When 20.0 g of a metal is placed in 9.0 mL of water, the volume increases to 14.5 mL. What is the density of the metal
You have standardized the NaOH solution that has a concentration of 0.05418 M. You are given a bottle of vineaga(acetic acid) with an unknown concentration.
a 25.00mL sample of NaClO is titrated with 0.001005M HNO3. If 10.02mL of of HNO3 is required to reach the endpoint of titration, determine the concentration of ClO- in the original sample.
Calcite (CaCO3) has two types of bond. What are the two types? Demonstrate which is the stronger by calculating the degree of ionic character of each bond
What volume of O2 is needed to react completely with 20.9L of H2 to give H2O if all gases are measured at 25 degrees C and 1atm? The Balanced equation is: 2H2+O2 ----> 2H2O
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