I am confused and although I was talked through a problem with the teacher I'm still lost.
The first problem I think I did right but I'm confused with rounding it to the right amount of significant figures
As the detective investigates a fire he notices that several windows have actually melted. He hypothosizes that fire changed the temperature of the room from room temperature(22.0 C) to at least 80 C. How much energy was added to a 6.00 kg window.(The specific heat if glass is 0.502)
6000X .502 j/ g* degrees CX58.0= 174696(How would you round that? Without a decimal point its confusing)
To raise a temperature of 50.0 ml of water from 25 degrees C to the boiling point how much heat do we have to add?(The density of water is 1.00 g/ml The specific heat is 4.184 J/g degrees C)
If.1570 J of heat is added to a 50.0 g metal bar and its temp changes from 20.0 degrees C to 55.0 What metal is it?
Can someone walk me through these?