A small rock is heated and placed in a foam cup calorimeter containing 20.0 mL of water at 25*C. The water reaches a maximum temperature of 27.2*C. How many joules of heat are released by the rock? if...
You have a cup of tea (250 mL) that is 375 K which is too hot to drink. It needs to be cooled to 350 K before you can drink it. How much thermal energy has to be transferred from the tea to the...
If 10 liters of oxygen at STP (273 k and 1 atm) are heated to 512*C, what will be the new volume of gas if the pressure is also increased to 2.0 atm of mercury?
Identify which of the following are redox reactions. If a reaction is a redox reaction, name the element oxidized, the element reduced, the oxidizing agent, and the reducing agent. a. Mg(s)+ Br2(l)...
Calculate the hydrogen-ion concentration [H+] for the aqueous solution in which [OH-] is 1 x 10^-3 mol/L. Is this solution acidic, basic, or neutral? Show your work....
A 105 g piece of copper wire is heated and the temperature of the wire changes from 25*C to 91*C. The amount of heat absorbed is 645 cal. What is the specific heat of copper? Show all work, including...
