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1. A 21.5 g sample of a metal is immersed in boiling water at 100.0°C and then transferred to a calorimeter containing 75.0 g of water at 22.5°C . The final temperature of the water is 27.0°C. What is the specific heat of the metal? Using the table in Section 13.1, identify the metal.
*please provide explanation
2. For the following REDOX reaction, state the oxidation number for each element in the reaction. State which element is being oxidized and which element is being reduced, as well as how you know. State which element is the oxidizing agent and which element is the reducing agent, as well as how you know.
MnO2 + H2C2O4 + H2SO4 --> MnSO4 + CO2 + H20
Survival of trout needs water in which the oxygen concentration is greater than 5 ppm. A 100-mL sample of lake water was examined according to the method outlined in question 6 with the liberated iodine requiring a 9.72mL titration with 0.01235 M ..
Problem- Hydrogen gas reacts with oxygen gas to form water vapor. If 5.50 g of hydrogen gas react with 10.50 g of oxygen gas, how many grams of water vapor will be produced
Question- Magnesium metal (0.100mol) and a volume of aqueous hydrochloric acid that contains 0.500 mol of Hcl are combined and react to completion. How many liters of hydrogen gas measure at STP, are produced
Question- First determines if there is a reaction in each of the following cases. If there is, write the products, including their physical states. It is not necessary to balance the equations. Also if there is no reaction, just write "NR".
at ordinary body temperature 37 c the solubility of n2 in water in contact with air at ordinary atmospheric pressure
In 13C NMR, splitting of spectral lines is due to: A) coupling between a carbon atom and protons attached to that carbon atom b) coupling between a carbon atom and protons attached to adjacent carbon atoms
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Calculate ?Grxn at 298 K under the conditions shown below for the following reaction. 3O2(g)--> 2O2(g) ?G°=326 kJ P(O2) = 0.41 atm, P(O3) = 5.2 atm
Assume a density of 1.08g/mL for the solution. A)Find molarity of solution B)Find molality of solution C)Calculate mass percent of solution
This calibration was carried out in a 1.00 cm cell, and yielded an absorbance of 0.2850 AU. An unknown was then analyzed in this same spectrophotometer, but using a 2.50 cm cell. If the absorbance of the unknown was 0.2270 AU, what is the Cu conce..
Think back to what you learned in this course about solutions and intermolecular forces. Why don't these to "mix" together (in other words, make a homogenous solution) when combined. Why do they separate into layers
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