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A silver voltmeter,copper voltameter and oxygen voltameter are connected in series. Given that 4.32g of silver is deposited during the electrolytic process, determine(I) the mass of copper deposited(ii) the volume of oxygen liberated (Ag=108, Cu=64, O=16, G.M.V=22.4dm³
The specific heat of copper metal is 0.385 j/g-oK. How many kJ of heat are needed to raise the temperature of 1.1 kg block of copper from 27.5°C to 50°C?
A mole of a newly discovered crystalline substance weighs 14.56 grams and displaces 2.3 ml of water. Find the atomic radius and density of each atom if it is a simple cubic cell? BCC? FCC? HCP?
Oxidizing agent is oxidized by reducing agnet ?true or false
Determine the molar mass of an unknown nonvolatile solute of nonelectrolyte compound raising the boiling point of 150 g of benzene by 0.500°C.
Calculate the boiling point and freezing point of the following solutions:
1) 0.575 molal aqueous solution
2) 10 g of CH,0 dissolved in 259 g water.
3) 0.5 mole Br, dissolved in 507 g chloroform
Arrange the four liquids in the order they would position themselves in a test tube based on their densities.
silicone oil, water, hexane, honey
300 j of heat added to a system and 250 j of work is added by the system. what is the change in internal energy by the system?
A system has constant volume (ΔV=0) and the heat around the system increases by 50 J.
What is the sign for heat (q) for the system?
What is ΔU equal to?
What is the value of internal energy of the system in Joules?
Find the ∆E
a) When 175J of work is done on a system that evolves 50J of heat to the surrounding. b) When a gas absorbs 28kJ of heat and 13kJ of work done on it.
