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xeze [42]
2 years ago
15

What hypothesis led to the discovery of the proton?

Chemistry
2 answers:
amm18122 years ago
8 0

Answer:

The finding of the photon took place by the hypothesis that when a neutral atom of hydrogen loses an electron, a positively charged particle stays there within an atom. The proton refers to a subatomic particle, signified by the symbol p+, with a positive charge and +1e elementary charge and the mass somewhat less in comparison to that of a neutron.  

It was discovered by Rutherford that the atom must exhibit a concentrated positive center charge, which comprises the majority of the mass of the atom. It was suggested by him that the nucleus comprises a constituent with a positive charge known as the proton.  

Lana71 [14]2 years ago
4 0

When a neutral hydrogen atom loses an electron, a positively-charged particle should remain.

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g A radioactive isotope of mercury, 197Hg, decays to gold, 197Au, with a disintegration constant of 0.0108hrs.-1. What % of the
weqwewe [10]

Answer:

7.49% of Mercury

Explanation:

Let N₀ represent the original amount.

Let N represent the amount after 10 days.

From the question given above, the following data were obtained:

Rate of disintegration (K) = 0.0108 h¯¹

Time (t) = 10 days

Percentage of Mercury remaining =?

Next, we shall convert 10 days to hours. This can be obtained as follow:

1 day = 24 h

Therefore,

10 days = 10 day × 24 h / 1 day

10 days = 240 h

Thus, 10 days is equivalent to 240 h.

Finally, we shall determine the percentage of Mercury remaining as follow:

Rate of disintegration (K) = 0.0108 h¯¹

Time (t) = 10 days

Percentage of Mercury remaining =?

Log (N₀/N) = kt /2.303

Log (N₀/N) = 0.0108 × 240 /2.303

Log (N₀/N) = 2.592 / 2.303

Log (N₀/N) = 1.1255

Take the anti log of 1.1255

N₀/N = anti log 1.1255

N₀/N = 13.3506

Invert the above expression

N/N₀ = 1/13.3506

N/N₀ = 0.0749

Multiply by 100 to express in percent.

N/N₀ = 0.0749 × 100

N/N₀ = 7.49%

Thus, 7.49% of Mercury will be remaining after 10 days

5 0
2 years ago
Fabric is made of ___​
GuDViN [60]

Answer:

Fabric is made of cotton.

Explanation:

Hope that helps :)

6 0
3 years ago
Read 2 more answers
What is the symbol for the element whose atoms have 40 electrons each?
inysia [295]
<span>The symbol for the element whose atoms have 40 electrons each is Zr. This is the element zirconium. In the atoms of a pure element, the number of positively charged protons is normally equal to the number of negatively charged electrons. Hence, the number of electrons in the atom can be inferred from the atomic number, which corresponds to the number of protons in an atom. The atomic number of zirconium is 40.</span>
8 0
3 years ago
How can you compare the DNA in your brain cells to the DNA in your heart cells ?
alekssr [168]
The DNA is identical because all of your cells came from that one cell through mitosis which gives and exact copy of the DNA. All body cells got the complete "instruction manual" for the body, but only uses the proteins needed.
8 0
3 years ago
john roller skates with a constant speed of 8 miles per hour. how long will he take to travel a distance of 28 miles? please use
joja [24]

Answer:

3.5hrs

Explanation:

Using the formula Speed = Distance/Time

Given

Speed = 8mi/hr

Distance = 28miles

Get the time

Time = Distance/Speed

Time = 28/8

Tme = 3.5hrs

Hence it will take 3.5hrs to travel

8 0
3 years ago
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