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3 years ago

How did the development of the earliest idea about atoms differ from the later work of scientists?

Chemistry

2 answers:

Tcecarenko [31]3 years ago

6 0

Answer:

Explanation:

AleksAgata [21]3 years ago

5 0

Thomson’s plum pudding model of the atom was later found to be inadequate following the discovery of the nucleus by Rutherford.

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What must be balanced in order to have a balanced chemical equation?

GarryVolchara [31]

Both sides need to be balanced?

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3 years ago

Can someone help me with this?

dolphi86 [110]

The answer would have to be “move fast and far apart.”

I really hope this helps you.

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4 years ago

Read 2 more answers

Which type of reaction occurs when 50mL quantities of 1 M Ba(OH)2 (aq) and H2SO4 (aq) are combined

iragen [17]

Double replacement.

Ba(OH)2 + H2SO4 ====> 2H2O + BaSO4

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4 years ago

The metal content of iron in ores can be determined by a redox procedure in which the sample is first oxidized with Br2 to conve

coldgirl [10]

Answer:

80.27%

Explanation:

Let's consider the following balanced equation.

2 Fe³⁺(aq) + Sn²⁺(aq) ⇒ 2Fe²⁺(aq) + Sn⁴⁺(aq)

First, we have to calculate the moles of Sn²⁺ that react.

$\frac{0.1015molSn^{2+} }{1L} .13.28 \times 10^{-3} L=1.348\times 10^{-3}molSn^{2+}$

We also know the following relations:

According to the balanced equation, 1 mole of Sn²⁺ reacts with 2 moles of Fe³⁺.
1 mole of Fe³⁺ is oxidized from 1 mole of Fe.
The molar mass of Fe is 55.84 g/mol.

Then, for 1.348 × 10⁻3 moles of Sn²⁺:

$1.348\times 10^{-3}molSn^{2+}.\frac{2molFe^{3+} }{1molSn^{2+} } .\frac{1molFe}{1molFe^{3+} } .\frac{55.84gFe}{1molFe} =0.1505gFe$

If there are 0.1505 g of Fe in a 0.1875 g sample, the mass percentage of Fe is:

$\frac{0.1505g}{0.1875g} \times 100 \% = 80.27\%$

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4 years ago

Who can tell me the half reaction about cucumber battery

xeze [42]

I've prepared some analysis and <span>cucumbers do have many comparable properties to potatoes, tomatoes, and lemons, all of which I know do work. So I would presume that cucumbers would also work. I would recommend trying it yourself to perceive. I'd love to hear the outcomes of your experiment. ;) </span>

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3 years ago