A 10.0 V battery-operated bottle warmer heats 60.0 g of glass, 2.30 ? 10^2 g of baby formula, and 2.50 ? 10^2 g of aluminum from 25.0°C to 85.0°C(Hint: Assume that the specific heat of baby formula is about the same as the specific heat of water.) a.) How much charge (in C) is moved by the battery? (b) How many electrons per second flow if it takes 4.00 min to warm the formula? electron(s)
a) Specific heat of glass: 750 J/kg K Specific heat of water: 4181 J/kg K Specific heat of aluminum: 921 J/kg K Convert grams of each to Joules absorbed by each Example calculation for glass: 60g (1 kg / 1000g) (750 J/kg K) (85 K - 25 K) 2700 J For water: 57700 J For Aluminum: 13800 J The energy absorbed by each part was energy given off from the battery so the sum of the energies absorbed is the total energy from the battery2700J + 57700J + 13800J 74200J We now use the definition of a Joule: J C V Since we know our volts, and found our Joules we solve for Coulombs 74200 J C 10V C 7420 C b) Convert from Coulombs to electrons 7420C (1 e / 1.6022E-19 C) 4.63 E22 electrons Convert minutes to seconds 4min (60s/ 1min) 240s Rate of electrons: 4.63E22 e / 240s 1.93E20 electrons/s
Yes, just where have you been? The bed should be made up of two sheets, and a blanket, or comforter, and you sleep between the sheetsAs for water, it depends where you liveIn a mainly backward country like America, it probably is safer to drink bottled water, but in advanced countries like Australia and Britain, tap water is quite safe to drink.
It's actually quite normal to sleep under the sheets as wellIf it gets too hot, you take off the comforter, but you can do it either wayDepending on where you live, it can be healthier to drink tap waterWhere I live, we have some of the best water in the country, so lots of people drink it from the tap, but my family also puts it through the filter pitchers (like Brita) or we take it from the door of our fridgeBut yeah, it just depends on how you were raised.
Are you suppose to sleep under the sheets or under the comforter? - How a person sleeps is a personal matterThere's no wrong way to do itwhat the heck? isn't that too hot? - Evidently not for someDepends on the temperature in the room and what makes you most comfortable wouldn't you say? And then I found out also just recently that people drink tap water like it's normal? - It is I've been raised on distilled water from the gallons my whole entire life! Where have I been? - Apparently not out in the real world.
What ever makes you comfortableI sleep on top of everythingAnd depending where you live, water from tap usually is almost identical to distilled waterI personally have both but if I'm near the sink, then I'll drink tapIt the same thing really where I live.
