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SVETLANKA909090 [29]
3 years ago
9

Describe the experiments conducted by Thomson and Rutherford, and how the observations and evidence from each of these experimen

ts led to changes in the model of the atom.
Chemistry
1 answer:
nasty-shy [4]3 years ago
4 0
                                       Thomson
In  his  model discovered  electron  which  has  negative  charge whereby  this   electrons  were  positioned  throught  the  atom  surrounded  by  a  soup of  positive  balance   the  negative  charge  of  electron
                      Rutherford
  In  his  model  concluded  that  atom  is  made  up  of  central  charge surrounded   by  orbiting  electrons.
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Which of the changes are physical changes
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Answer:

boiling, melting, freezing, and shredding.

Explanation:

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3 years ago
For the balanced equation shown below, how many moles of O2 b
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3 years ago
The theoretical yield of NaBr from
Dvinal [7]

the percent yield of the reaction is 100%.

The percent yield is calculated as the experimental yield divided by the theoretical yield x 100%:

% yield = actual yield / theoretical yield * 100%

% yield of a reaction in this case Rate

In this case, the molar mass of NaBr is 102.9 g / mol, as you know:

444 actual yield = 7.08 mol x 102.9 g / mol = 728.532 g

theoretical yield = 7.08 mol x 102.9 g / mol = 728.532 g

, Replaced by the definition of percent yield:

percent yield = 728.532 grams / 728.532 grams * 100%

percent yield = 100%

Finally, the percent yield of the reaction is 100%.

<h3 />

FeBr3 is iron bromide. Also known as iron bromide. Iron bromide is an ionic compound in which iron is in a +3 oxidation state.

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5 0
2 years ago
Which is transferred due to a temperature difference?
Sliva [168]

Answer:

A

Explanation:

heat energy is transfered through a hot object touching a cold object

5 0
3 years ago
. Guillermo was finding it difficult to walk up the steps to his family’s apartment. His doctor thinks that his cells might not
morpeh [17]

Answer:

Because oxygen is the combustion  fuel and glucose  is the substrate needed for synthesis of energy as ATPs during cellular respiration.Therefore Guillermo lacks enough energy as ATPs in her  body cells, especially skeletal muscles cells to complete the task of ascending the s steps.

For all the mitochondrial in cells(sites of energy production)   to receive needed glucose,and other metabolites needed for  energy synthesis; an efficient transport system is needed, so that  these materials   are available  immediately, in required amount. This system is called circulatory system.

And for the the supply of combustion fuel (oxygen) needed for the completion of the ATP synthesis mechanisms;  respiratory systems which  convey oxygen from the external environments to the circulatory system through breathing mechanisms, for distribution is needed.

Thus the  doctor needs to test both the circulatory and respiratory systems.

Explanation:

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2 years ago
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