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3 years ago

Why did Rutherford say that bombarding atoms with particles was like “playing with marbles”?

1 answer:

s2008m [1.1K]3 years ago

8 0

In 1917, Rutherford discovered something new, he bombarded alpha particles on nitrogen gas and noticed that occasionally an oxygen atom is produced. From this he concluded that the alpha particles removes proton from the nucleus (positively charged particle). He named this playing with marbles and he become the first one to split an atom. Thus, by bombarding nitrogen with alpha particles, he observed the production of oxygen, a different element.

Therefore, he said bombarding atoms with particles is similar to playing with marbles.

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Carbon is found in all known forms of life. Which statement best describes why carbon is uniquely suited to forming macromolecul

Helen [10]

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2 years ago

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Indicate type of chemical reactions for 2Mgl2+MN(SO3)2=2MgSO3+Mnl4<br>

Sever21 [200]

Answer:

double decomposition reaction

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3 years ago

Substitute natural gas (SNG) is a gaseous mixture containing CH4(g) that can be used as a fuel. One reaction for the production

Lynna [10]

Answer:

ΔH° of the reaction is -747.54kJ

Explanation:

Based on gas law, it is possible to find the ΔH of a reaction using ΔH of half reactions.

Using the reactions:

<em>(1) </em>C(graphite) + 1/2O₂(g) → CO(g) ΔH° = -110.5 kJ

<em>(2) </em>CO(g) + 1/2O₂(g) → CO₂(g) ΔH° = -283.0 kJ

<em>(3) </em>H₂(g) + 1/2O₂(g) → H₂O(l) ΔH° = -285.8 kJ

<em>(4) </em>C(graphite) + 2H₂(g) → CH₄(g) ΔH° = -74.81 kJ

<em>(5) </em>CH₄(g) + 2O₂(g) → CO₂(g) + 2H₂O(l) ΔH° = -890.3 kJ

The sum of 4×(4) + (5) gives:

4C(graphite) + 8H₂(g) + 2O₂(g) → CO₂(g) + 2H₂O(l) + 3CH₄(g)

ΔH° = -74.81 kJ ×4 - 890.3 kJ = -1189.54kJ

Now, this reaction - 4×(1) gives:

4CO(g) + 8H₂(g) → CO₂(g) + 2H₂O(l) + 3CH₄(g)

ΔH° = -1189.54kJ - 4×-110.5 = <em>-747.54kJ</em>

Thus <em>ΔH° of the reaction is -747.54kJ</em>

3 0

3 years ago

Determine the density of gold if a 475.09g sample occupy a space of 24.6cm^3

Ira Lisetskai [31]

Answer:

The answer is

Explanation:

The density of a substance can be found by using the formula

$density = \frac{mass}{volume}$

From the question

mass of gold = 475.09g

volume = 24.6 cm³

The density of the gold is

$density = \frac{475.09}{24 .6} \\ = 19.3126016...$

We have the final answer as

Hope this helps you

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3 years ago

What is the total number of valence electrons in a carbon atom in the ground state

kolbaska11 [484]

Carbon will have 4 valence electrons. It will have 2 in the p orbital and 2 in the s orbital. You can see this when you find the noble gas configuration of carbon which is [He]2s²2p² showing that carbon has 4 valence electrons.
I hope this helps. Let me know if anything is unclear.

6 0

2 years ago