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dexar [7]
2 years ago
6

Becquerel placed photographic paper in a drawer with some radioactive rocks and discovered that the amount of exposure on the pa

per was proportional to the amount of uranium that was present in the rocks. True False
Chemistry
1 answer:
jolli1 [7]2 years ago
5 0

Becquerel  did not discover that the amount of exposure on the paper was proportional to the amount of uranium that was present in the rocks

<h3>What is radioactivity?</h3>

The phenomenon of radioactivity was discovered by the French scientist Henri Becquerel in 1896 when he placed photographic paper in a drawer with some radioactive rocks.

We have to note that Becquerel did not discover that the amount of exposure on the paper was proportional to the amount of uranium that was present in the rocks hence the stetement is false.

Learn more about radioactivity: brainly.com/question/1770619?

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Which formula represents the compound commonly known as phosphine
Arlecino [84]
I looked up what is the molecular formula for Phosphine and got this: PH3
Hope this helps! Let my know if this was correct.
8 0
3 years ago
Which of the following is a half-reaction? A. Zn+CuSO4−&gt; B. 2Cl−−&gt;Cl2+2e− C. H2+1/2O2−&gt;H2O D. −&gt;Cu+ZnSO4
malfutka [58]

Answer:

2Cl——>Cl2+2e-

Explanation:

It shows an electron loss or gain

8 0
3 years ago
Question 4 (1 point)
wlad13 [49]
The answer would be A
4 0
3 years ago
Someone plz hello me ASAP it would be appreciated on question 2 and 3 btw
il63 [147K]

Answer:

2 should be potential energy and 3 should be A

Explanation:

6 0
3 years ago
Read 2 more answers
18. give the product for the following reactions sequence. a) 3-pentanone b) 2-pentanone c) propanone d) 2-butanone e) methyl pr
serg [7]

The product for the following reaction are :

  • 2 - butanone
  • CH₃CH₂COCl
  • CH₃CH₂CONHCH₃

T carboxylic acid is an organic compound. the functional group of carboxylic acid is carboxy. general formula is given as : R - COO⁻.

The reactions are given as follows :

1) the reduction of carboxylic acid into ketone with the organometallic compound is given as follows :

CH₃CH₂COOH     +  CH₃Li   ------>   CH₃CH₂COCH₃

                                                                  2 butanone

2) the reaction of carboxylic acid with SOCl₂ is given as follows :

CH₃CH₂COOH    +   SOCl₂   ----->   CH₃CH₂COCl

3) the reaction of carboxylic acid with CH₃NH₂ is given as follows

CH₃CH₂COOH  +   CH₃NH₂   ----->   CH₃CH₂CONHCH₃

Thus,  The product for the following reaction are :

  • 2 - butanone
  • CH₃CH₂COCl
  • CH₃CH₂CONHCH₃

To learn more about carboxylic acid here

brainly.com/question/4721247

#SPJ4

5 0
1 year ago
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