Temperature Meter
A look at what is currently available on eBay
![-50??150? LCD Temperature Meter Probe Waterproof [K243]](http://www.dubltee.com/images/e/170778462263_0.jpg) -50??150? LCD Temperature Meter Probe Waterproof [K243] US $.99 
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 Professional 3-in-1 PH, ORP mV, Temperature Meter °C/°F US $141.90
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 LCD Digital Temperature Humidity Meter Hygrometer Clock US $.20
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 Xtune LED Electric Digital Oil Temperature Meter Gauge US $36.99
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 Xtune LED Digital Oil Temperature Meter 52mm JDM Gauge US $36.99
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 Xtune LED Digital Oil Temperature Meter 52mm JDM Gauge US $36.99
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 Digital DC Temperature Meter for K Type EGT Probe (F) US $6.99
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 Digital Thermometer Temperature Meter Gauge US $8.99
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 Digital 0~14 pH Meter Tester Thermometer Temperature °C US $25.50
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how many electrons in 1 cubic meter of copper at room temperature?
I can't do the calculations... but I can indicate how it's done...
1. Using the density of copper (at room temperature), work out the mass of copper in 1 cubic meter.
2. Knowing the atomic weight of copper, work out how many moles of copper atoms there are, and hence how many atoms.
3. Using the atomic number of copper (and hence the number of electrons per atom), work out the number of electrons.
QED.
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May 9th, 2007 in
Uncategorized | tags: data, flow, logger, meter, pressure, temperature meter, temperature meter fluke, temperature meter for cpu, temperature meter for laptop, temperature meter for mac, temperature meter for pc, temperature meter mac, temperature meter with probe, temperature metered bottle, temperature meters, transmitter, ultrasonic