Silver tarnishes in the presence of oxygen and hydrogen sulfide according to the following equation:
4Ag(s) + 2H_S(g) + O2(g) → 2Ag, S(s) + 2H2O(1)
tarnish
Usually, H, S is the limiting reactant. If a silver spoon is placed in a container
that holds 62.1 mL of H, S at 1.15 atm and 23.0°C, how many grams of silver
on the spoon will tarnish?

In order to calculate the amount of heat transferred you must know the __ and specific heat of the material, as well as the change in temperature. a. volume b. density c. mass d. enthalpy

7. using your knowledge of colligative properties explain whether sodium chloride or calcium chloride would be a more effective substance to melt the ice on a slick sidewalk. use 3 – 4 sentences in your explanation. 8. when a 2.5 mol of sugar (c12h22o11) are added to a certain amount of water the boiling point is raised by 1 celsius degree. if 2.5 mol of aluminum nitrate is added to the same amount of water, by how much will the boiling point be changed? show all calculations leading to your answer or use 3 – 4 sentences to explain your answer. 9. if 5.40 kcal of heat is added to 1.00 kg of water at 100⁰c, how much steam at 100⁰c is produced? show all calculations leading to an answer. 10. the freezing of water at 0⁰c can be represented as follows: h2o (l) ↔ h2o(s) the density of liquid water is 1.00 g/cm3. the density of ice is 0.92 g/cm3. in 3 – 4 sentences explain why applying pressure causes ice to melt.

In a copper wire, a temperature increase is the result of which of the following