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3 years ago

Why did Thomson’s results from experimenting with cathode rays cause a big change in scientific thought about atoms

2 answers:

5 0

Answer is: Tomson concluded that atoms are divisible and that the corpuscles are their building blocks (atoms are made up of smaller particles).

J. J. Thomson discovered the electron in 1897.

His "plum pudding" model (1904) suggested: the electrons are embedded in the positive charge.

With this model, he abandoned his earlier hypothesis (the atom was composed of immaterial vortices).

alexira [117]3 years ago

3 0

It caused a big change in scientific thought about atoms because from that experiment he discovered one of the atom's sub-particles, which is the negative charged electron.

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A 300-gallon anaerobic digester will be loaded daily with a feedstock that contains two parts dairy manure and one-part water by

Mars2501 [29]

Answer:

The volume of feedstock needed to mantain an organic load rate of 2 kgVS/day is 0.055 m3/day of feedstock.

The HRT is 20.6 days.

Explanation:

First, we calculate how many kg is 1 m3 of feedstock. We know the density, so we can calculate the mass:

$M=\rho*V=37.5\frac{lb}{ft^3}*1m^3*(\frac{3.281ft}{1m}) ^3=1324.5lb=600.7 kg$

If the VS are 6% in weight,

$M_{vs}=0.06*M=0.06*600.7\,kg/m^3=36,0kgVS/m3$

The volume per day needed to feed 2 kg of VS/day is:

$V=\frac{2kg}{36kg/m^3}= 0.055m3/day=5.5litres/day$

The HRT depends on the volume of the tank and the flow. Its equation is

$HRT=\frac{V}{Q}=\frac{300gal}{0.055 m^3/day}*\frac{1m^3}{264.172gal}\\ \\HRT=20.6\,days$

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That’s nice. Maybe bring your own next time

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Answer:

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