Answer:
well the first one is radiation the second one is conduction and the third one is convection. hope this helps! :)
Explanation:
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answer: 21.1 cm
Answer:
0.075 is the mole fraction for HCl
Explanation:
Mole fraction = Moles of solute or solvent / Total moles
Total moles = moles of solute + moles of solvent
In this solution:
HCl is the solute
H₂O is the solvent
4.50 m means molal, 4.50 moles of HCl in 1kg of water.
Let's determine the moles of water
1000 g . 1mol/18 g = 55.5 moles
Total moles = 4.50 + 55.5 = 60.05 moles
Mole fraction of HCl = 4.50 / 60.05 → 0.075
Answer:
Answer: (1R,2S) / (1S, 2R) , (1R,2R) / (1S, 2S)
Explanation:
Sodium borohydride reduction of benzoin will give four possible stereo isomers out of which are (1R,2S) - (1S, 2R) isomers and (1R,2R) - (1S, 2S) isomers which are known as enantiomers.
In general enantiomers show single spot in the TLC as they do not show any difference in Rf value (i.e) (1R,2S) - (1S, 2R) isomers show only one spot although they are two compounds and also (1R,2R) - (1S, 2S) isomers also show one spot. That is the reason why you are observing two spots in the TLC ( of reaction mixture) other than starting materilal.
Answer:
the empirical formula of the metal fluoride.
Explanation:
Mass of copper heated = 8.249 g
Mass of copper fluoride formed = 13.18 g
Mass of fluorine gas in copper fluoride = x
Moles of copper :
Moles of fluorine:
For the empirical formula divide the smallest mole of an element with all the moles of elements present in the compound.
The empirical formula of the copper fluoride =
the empirical formula of the metal fluoride.