We normally give \"brightest\" of a house-hold light bulb by giving the amount of power that light bulb uses. A house-hold bulb that discipates 100W of electrical power puts out more light that one that discipates 60 Watts of electrical power. A standard light bulb operates on a potential drop of around 95 V. 1) For a 75 watt light bulb, what is the current through the bulb?
i =
2) What is the resistance of this bulb?
R =
3) Now assume you have a light bulb that has half the resistance of the one in part (2) and the same potential drop. What is the is the power rating of this bulb?
P=

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?

What is a view of science and psychology that says the value of knowledge depends on its usefulness? a. pragmatism b. psychotherapy c. physiology

The solid that is formed and usually sinks to the bottom of a solution is the