Which event would be impossible to explain by using john dalton’s model of the atom?
a)an ir...
Chemistry, 22.08.2019 13:50 esmeralda266
Which event would be impossible to explain by using john dalton’s model of the atom?
a)an iron atom emits particles when it is struck by light.
b)an oxygen atom combines with two hydrogen atoms to form water.
c)an acid reacts with a base to form salt and water.
d)the atoms in sodium metal react with water.
Answers: 2
Chemistry, 21.06.2019 15:30
How many atoms are in 1.4 mil of phosphorus trifluoride (pf3)
Answers: 3
Chemistry, 22.06.2019 07:00
The boiling point of propanoic acid is higher than that of 1-butanol because: propanoic acid has a higher molecular weight than 1-butanol. propanoic acid is more soluble in water than 1-butanol. propanoic acid is a better hydrogen bond donor than 1-butanol. propanoic acid forms hydrogen bonded dimers and 1-butanol does not. 1-butanol forms hydrogen bonded dimers and propanoic acid does not.
Answers: 2
Chemistry, 22.06.2019 17:10
)benzene and toluene form nearly ideal solutions. consider an equimolar solution of benzene and toluene. at 20 °c the vapour pressures of pure benzene and toluene are 9.9 kpa and 2.9 kpa, respectively. the solution is boiled by reducing the external pressure below the vapour pressure. calculate (i) the pressure when boiling begins, (ii) the composition of each component in the vapour, and (iii) the vapour pressure when only a few drops of liquid remain. assume that the rate of vaporization is low enough for the temperature to remain constant at 20 °c.
Answers: 1
Chemistry, 22.06.2019 18:40
What is the binding energy of a nucleus that has a mass defect of 5.81*10-^29 kg a 5.23*10-^12 j b 3.15* 10^12 j c 1.57*10-3 j d 9.44*10^20 j
Answers: 1
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