How many atoms are in FEOH?

How many atoms are in FEOH? Percent composition by element Element Symbol # of Atoms Iron Fe 1 Hydrogen H 3 Oxygen O 3 How many atoms are in Fe2O3? five atoms What is the chemical name for rusting? iron oxide What is the importance of rusting? Rusting is the corrosion of iron which is […]

Is sea water more dense than water?

Is sea water more dense than water? Salt water is more dense than fresh water Seawater is more dense than fresh water so it sinks beneath freshwater. This means that when rivers flow out into the sea the river freshwater floats on top of the sea water. Is salt water more dense then fresh water? […]

How accurate is a spectrophotometer?

How accurate is a spectrophotometer? The minimum is not sharp and good results can be expected in a transmittance range from 0.2 to 0.6 or an absorbance range from 0.7 to 0.2. An inspection of the graph below indicates that transmittance values of 0.1 and 0.8 are the outside limits between which one can expect […]

What describes the movement of wind?

What describes the movement of wind? Movement of air caused by temperature or pressure differences is wind. Consequently, air blows anticlockwise around a low pressure centre (depression) and clockwise around a high pressure centre (anticyclone) in the northern hemisphere (see Figure 3.1). Which set of conditions describes a low pressure system? Explanation: A low pressure […]

Can I scrape plaque off my teeth?

Can I scrape plaque off my teeth? Brushing and flossing daily is really important because plaque quickly becomes tartar, and once it’s tartar, you can’t remove it on your own, or at least, you shouldn’t. Tartar build-up needs to be scraped off, and trying to do this at home can cause you to scratch the […]

How cold can a Stirling engine get?

How cold can a Stirling engine get? If you design the machine correctly, the cold end will get extremely cold. In fact, Stirling coolers have been made that will cool below 10 degrees Kelvin. Micro Stirling coolers have been produced in large numbers for cooling infrared chips down to 80 degrees Kelvin for use in […]

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