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a small amount do aqueous ammonia is added to a Cd^2+ solution and a precipitate forms. Write the equation for this reaction.
A sample of cadmium with mass 2.248g is dissolved in 3.00M HCl. What volume of HCl is required to dissolve the Cd. (Cd dissolves in HCl to form Cd^2+)
a sample of cadmium with mass 2.248g is dissolved in 3.00M HCl. What volume of HCl is required to dissolve the Cd. (Cd dissolves in HCl to form Cd^2+)
The molar heat capacity of silver is 25.35 . How much energy would it take to raise the temperature of 8.80 of silver by 10.2
when copper(II) hydroxide is heated it dehydrates, losing one molecule of water and forming copper(II) oxide.
The H2O molecules above and below the equatorial plane are more loosely bound. For convenience this ion is often written as Cu^2+(aq) Addition of NaOH to the Cu^2+ (aq) solution causes a precipitate
A solution of H2SO4(aq) with a molal concentration of 3.22 m has a density of 1.183 g/mL. What is the molar concentration of this solution?
In a calorimetry experiment, it was determined that a 92.0 gram piece of copper metal released 1860 J of heat to the surrounding water in the calorimeter (qcopper = ?1860 J).
A 10.0 gram piece of metal is placed in an insulated calorimeter containing 250.0 g of water initially at 20.0°C. If the final temperature of the mixture is 25.0°C, what is the heat change o
In an experiment to analyze mixture of sodium carbonate, sodium bicarbonate, and an inert component. 10.00ml of 0.100M HCl were used to titrate 0.300g of the sample using phenolphthalein as the indi
What is the specific heat of liquid water, written with correct units? Refer to Table 5.2 or Appendix B in your textbook, or your lecture notes.
When the surroundings absorbs heat, is the heat change of the system (qsystem) positive or negative
What can we say about the temperature change of a sample of water when the value of q is negative
Assuming stomach acid is 0.1 M HCl, how many grams of stomach acid would have been neutralized by311mg of Mg(OH)2
Different manufacturers claim to have the best antacid. Which of the following tablets would neutralize the most acid for the money
If the hydrolysis to the diacid is not complete, how could you separate the desired diacid from the unhydrolyzed anhydride by extraction. Discuss the chemistry involved.
If 2.5 mL of seawater contains about .0000000000058 moles of gold (Au), how many atoms of gold are in that volume of seawater
What is the maximum yield of benzocaine, in grams, if the molar mass of benzocaine is 165.19 g/mol the molar mass of p-toluidine is 107.16 g/mol and 5.33 grams of p-toluidine is used
Calculate the number of Cys residues in the peptide assuming that the total solution volume has not changed after addition of Ellman's reagent and that the stoichiometry of the reaction is 1:1 (i.e.
How many spots should you see on a TLC plate for your recrystallized benzoic acid (assuming your recrystallization worked)
The famous Hope Diamond at the Smithsonian National Museum of Natural History wieghs 45.52 carats. Diamond is a crystalline form of carbon.
What volume of a 0.215 M sodium hydroxide solution is needed to exactly neutralize 1.06 grams of KHP
Consider a solution that contains 72.0% R isomer and 28.0% S isomer. If the observed specific rotation of the mixture is -41.0°, what is the specific rotation of the pure R isomer
A tank contains 20 percent liquid water and 80 percent steam by volume at 200 degrees celsius. Steam is withdrawn from the top of the tank until the fluid remaining in the tank is at temperature of
Peaks that appear to the right of 3000 cm-1 in an IR spectrum are characteristic for which stretching vibration