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lana [24]
3 years ago
14

Which discovery did J. J. Thomson make that improved upon Dalton's atomic theory?

Chemistry
1 answer:
erik [133]3 years ago
3 0

Answer: Atoms contain tiny, negatively charged electrons

Explanation: Thomson's experiments with cathode ray tubes helped him to discover the electron (which Dalton did not know about). Dalton thought that atoms were indivisible particles, and Thomson's discovery of the electron proved the existence of subatomic particles.

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In step 2, of the experiment, the procedure uses 3.0M NaOH. However, the student notices that the only solution of NaOH is conce
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Answer:

We need 78.9 mL of the 19.0 M NaOH solution

Explanation:

Step 1: Data given

Molarity of the original NaOH solution = 19.0 M

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Step 2: Calculate volume of the 19.0 M NaOH solution needed

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⇒with V1 = the volume of the original NaOH solution = TO BE DETERMINED

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⇒with V2 = the volume  of the NaOH solution we want to prepare = 500 mL = 0.500 L

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V2 = (3.0 M * 0.500L) / 19.0 M

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We need 0.0789 L

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3 years ago
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Answer:

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Explanation:

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