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What has the largest atomic radius F F Cl or Cl?

Chlorine has a larger atomic radius than fluorine. This is because chlorine has its outermost electrons in the 3rd energy level, which is farther from the nucleus, and fluorine has its outermost electrons in the 2nd energy level, which is closer to the nucleus.


How many kilograms are in 25 femtograms?

Femto is the SI prefix standing for 10-15, kilo is the prefix for 103. so the difference between kilo and femto is 3-(-150) or 3+15 = 18. So there are 1018 fg in one kg. That is 1 000 000 000 000 000 000 femtogram.


A sample of 1mol of water is condensed isothermally and reversibly to liquid water at 100 degreethe standard enthalpy of vaporization of water is 40.656kj per mole find work and heat?

Well, honey, to find the work done during the process, you use the equation W = -ΔnRT, where Δn is the change in moles of gas (which is 1 mol in this case), R is the gas constant, and T is the temperature in Kelvin. As for the heat, it's simply the negative of the enthalpy change, so it would be -40.656 kJ. Just plug those numbers in and you'll have your answers faster than you can say "hot potato."


What is the normality of isotonic saline 85 percent NaCL?

NaCl (gmw=58g, valence=1) Grams of equivalent weight = 58/1 = 58grams so 1EQ/ 58grams=1 Normality is expressed in Eq/L With 1% defined as 1 gram per 100 ml, 85% is 85 grams per 100 ml (1EQ/58grams) * (85grams/100ml) * (1000ml/L) = 85000eq/5800L = 14.655 or 15N Although I don't think you were supposed to do 85%, for clinical chemistry it should be something more like 0.85% or the solution would be too hypertonic. In which case it would be (1eq/58grams)*(0.85grams/100ml)* (1000ml/L) = 850eq/5800L = 0.14655 or 0.15N FG 9/16/2012


How many joules are required to raise 25 g of ice at 0C to steam at 100C?

Q = [ mI ] [ h sub sf + CshW ( 100.0 C - 0.0 C ) + h sub fg ]Q = [ 25 g ] [ 333.7 J /g + ( 4.184 J / g - C ) ( 100.0 C ) + 2257 J / g ]Q = [ 25 g ] [ 3009.1 J / g ] = 75230 J