In order to come up with our modern-day atomic model, scientists added knowledge

Chemistry

1 answer:

Korvikt [17]2 years ago

4 0

Earnest Rutherford was JJ Thomson’s student. He disproved Thomson’s plum pudding model. So Rutherford comes after Thomson. Dalton is first because you should be aware of Daltons atomic theory on the atom. He was one of the first people to actually make a theory about atoms in that type of detail. Bohr came last. I forgot what Bohr’s model was, but you can do a quick google search if you want.

So your answer is B, the second one

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wel

Answer:

5000kg/m³

Explanation:

density=mass/volume

d=m/v

d=100/20

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g/cm³*1000=kg/m³

5g/m³*1000=5000kg/m³

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2 years ago

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The diagram below is an artist’s impression of a single atom of element Be. The neutrons are shown with stripes, the protons are

lara [203]

The correct option is B.
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8 0

3 years ago

What region of the atom contains most of the atoms mass?

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Answer:

Nucleus

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2 years ago

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The answer is a hope this helps

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1 year ago

If a pork roast must absorb

Black_prince [1.1K]

Let us assume propane was the fuel
C3H8(g) + 5O2(g) ---> 3CO2(g) + 4H2O(g) = 2217kJ
1 mole ofpropane produces 3 moles of CO2
heat absorbed by pork = 0.11 x 2217
= 243.87 kJ/mol
number of moles of propane = 1700kJ / 243.87 kJ/mol
= 6.971 moles
1 mole of C3H8 = 3 moles ofCO2
6.971 moles of C3H8 = ?
3 x 6.971 = 20.913 moles of CO2
Convert to grams
mass = MW x mole
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2 years ago