All categories

3 years ago

Why did the model of the atom change?

Chemistry

1 answer:

choli [55]3 years ago

8 0

D. Experiments provided new evidence about the atom, I think, sorry if I’m wrong

You might be interested in

Which statement describe global warming? Select 2 answer choices

jeka57 [31]

Global warming is the long-term heating of Earth's climate system observed since the pre-industrial period (between 1850 and 1900) due to human activities, primarily fossil fuel burning, which increases heat-trapping greenhouse gas levels in Earth's atmosphere

3 0

3 years ago

Can cells that are haploid (single set of chromosomes ) undergo meiosis

Dima020 [189]

Answer:

Yes they can

Haploid cells are mostly sex cells and these cells usually undergo meiosis.

Hope this helps.

5 0

3 years ago

An empty plastic bottle is sealed in a cool room and then moved to a very hot room. What can best be stated about the air pressu

andriy [413]

<span>It is higher than the pressure on the outside of the bottle.</span>

3 0

3 years ago

Read 2 more answers

Which element would you expect to have properties similar to Chlorine (Cl)

jeyben [28]

Answer:

Iodine

Explanation:

It's in the same group as chlorine.

5 0

3 years ago

A gas mixture of Ne and Ar has a total pressure of 4.00 atm and contains 16.0 mol of gas. If the partial pressure of Ne is 2.75

Stolb23 [73]

Answer:

5 moles of Argon is present in the mixture.

Explanation:

Total pressure of the gaseous mixture = 4 atm

Total number of moles = 16

Partial pressure of Ne = 2.75 atm

By Dalton's law of partial pressure, the total pressure of gaseous mixture is the sum of partial pressures of individual gases which are non-reactive.

Hence:

$P_{total}=P_{Ar}+P_{Ne}\\4=P_{Ar}+2.75\\P_{Ar}=1.25\ atm$

Also :

Partial pressure = mole fraction*total pressure

$P_{Ar}=X_{Ar}P_{total}$

$X_{Ar}=\frac{1.25}{4}=0.3125$

$\frac{n_{Ar}}{n_{total}}=0.3125\\n_{Ar}=5$

∴Number of moles of Argon = 5

4 0

3 years ago