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3 years ago

How did Becquerel’s work lead to the discovery of two new elements?

1 answer:

4 0

Becquerel discovered radioactivity by accident while studying a mineral containing uranium. He observed that with exposure to sunlight the mineral gave off a penetrating energy that exposed the film. While one day he tried the experiment one day the day was cloudy so he put it away in a dark dresser drawer and at the next day he found the picture of the mineral and later found out that the mineral did not need sunlight to expose radiation so he gave it to two young researchers that eventually isolated the two elements named polonium and radium.

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What dos the line of red semicircles maen on the weather map

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The red semicircle shown in the weather chart represents warm front.

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3 years ago

Read 2 more answers

A compound with molecular formula C6H9No that has an amide functional group and does not have an alkene group

Flauer [41]

Answer:

Following are the responses to the given question:

Explanation:

$\to C_6H_9NO$

calculating the HOI:

$= \frac{2C+2+N-H-X}{2} \\\\ =\frac{2\times 6+2+1-9-0}{2}\\\\ =\frac{12-6}{2}\\\\=\frac{6}{2}\\\\=3$

So, in the above compund there are three bounds or we can say that one is double and two bound is single.

Please find the attachment file of the Function group:

In the above given conditon compound doesn't include the alkene functional group that is absense of $-C=C-$ , and compound include $-C\equiv C-$ So, please find the attached file of the structure of the compound:

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3 years ago

Nitroglycerine decomposes violently according to the chemical equation below. What mass of carbon dioxide gas is produced from t

Ulleksa [173]

Explanation:

Below is an attachment containing the solution.

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4 years ago

Create a chemical equation for "Bubbling chlorine gas through a solution of sodium bromide gives elemental bromine and a solutio

Alexxandr [17]

Answer:

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Explanation:

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3 years ago

Explain the need of the term avarage atomic mass

vodomira [7]

Answer:

The average atomic mass of an element is the sum of the masses of its isotopes, each multiplied by its natural abundance (the decimal associated with percent of atoms of that element that are of a given isotopе). An element does not have an absolute atomic mass.

Hope this helps :)

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3 years ago