1 Determine the total cost of operating light bulb rated 100w when it is used for 5 hours per day to one month, if the cost of electricity in your area is 0.50 Php per kWh 2. A hair dryer is rated at 1200W. How much electrical energy is dissipated by the dryer when it is used
for 5 minutes
3.The ceiling fan in Gusion's room is rated at 240 V, 70 W. (al How much energy does it consume in a
monine if it is being used for 5 hour per day? (b) How much will he pay for operating this ceiling fan
the cost of electricity on their area is 0.50 Php per kWh​

1. how much energy is needed to raise the temperature of 40.0 g of argon from 25c to 40c? the specific heat capacity of argon is 0.520 j/(g·k) 2a. 23.0 ml of 0.100 m hcl (standard) are added from a buret to neutralize 50.0 ml of an unknown basic solution. 2b. if the oh- produced in the previous reaction came from ca(oh)2, then what is the molarity of the ca(oh)2? 3.calculate the new freezing-point of a solution when 60.5 grams of cacl2 solute is dissolved in 0.612 kg of water. 4. what is the maximum number of moles of alcl3 that can be produced from 5.0 mol al and 6.0 mol cl2? 5. a sample of oxygen gas has a volume of 150 ml when its pressure is 0.923 atm. if the pressure is increased to 0.987 atm and the temperature remains constant, what will the new volume be? 6. nitrogen gas in a closed container at a temperature of 100.0 oc and 3.0 atm is heated to 300 oc. what is the pressure of the gas at the higher temperature?