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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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A neutral atom of sulfur has the following characteristics:
Paraphin [41]

Answer: proton number = 16

Electron number =16

Neutron number =16

Explanation: Mass number = 32

Atomic number = 16

atomic number = proton number = 16.

Since the atom is neutral, proton number is the same as electron number i.e Electron number = proton number =16

Mass number = proton + Neutron

32 = 16 + Neutron

Neutron = 32 — 16 = 16

7 0
3 years ago
Neutralization is a process that occurs whenever an acid reacts with a base in the mole ratios specified by the balanced equatio
labwork [276]
The factors that can determine the outcome of a "neutralization reaction" include:
__________________________________________________________
1) temperature; 

2) concentration (of the solution); 

3) type of acid used;

4) type of alkali used;

5) type of reaction; 
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3 years ago
If a transverse wave travels 10 meters in 5 seconds what is its speed
matrenka [14]
2 meters per second. You do 10 divided by 5 to find your answer, which is 2.
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3 years ago
Cells with nuclei belong in the domain<br> Archaea<br> Bacteria<br> Eukarya<br> Protists
svet-max [94.6K]
Eukarya cause all cells with nuclei are considered eukaryotic
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3 years ago
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Which of the following statements best compares the pH value of H3PO4 and HCl?
wel

Answer:

Option B. Both have a pH less than 7, but H3PO4 has a lower pH than HCl

Explanation:

Those are acid, so the pH would be < 7.

H₃PO₄ is a weak acid with 3 dissociations

HCl is a strong acid.

pH depends on [H]⁺

H₃PO₄  →  3H⁺  +  PO₄⁻³

HCl →  H⁺  +  Cl⁻

If both acid, have the same concentration, [H⁺]H₃PO₄ > [H⁺]HCl, that's why the pH from the phosphoric will be lower.

5 0
3 years ago
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