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postnew [5]
3 years ago
12

A sample of liquid ammonia has a density of 0.7 g/mL. Find the mass of a 20 mL

Chemistry
1 answer:
Jet001 [13]3 years ago
3 0

Answer:

Mass of liquid ammonia is 0.035g.

Explanation:

I hope this will help u

Have a nice day

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A certain box contains 200 particles of an ideal gas. how many times more likely is it to find the particles evenly split betwee
Strike441 [17]

 Each particle has two possibilities: either it is on the left hand side or it is on the right hand side.  

The probability of having them equally split is  

P(100,100) = 200C100 / 2^200  

where 200C100 is the binomial coefficient.  

For the uneven distribution we have  

P= 2 * 200C160 / 2^200  

where the factor 2 comes in because we could have 160/40 or 40/160 as a division.  

So the ratio of probabilities is  

200C100 /(2 * 200C160 )  

= 2.2 * 10^16

Hope this helps!

5 0
3 years ago
How does the emission spectrum support the idea of quantized energy levels
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Explanation:

Different atoms absorb and emit specific wavelengths of electromagnetic radiation and nothing in between. These absorption and emission spectra are actually used to identify atoms of elements in a substance. This phenomenon is explained by Bohr's theory of quantized energy levels in an atom – called orbital levels. When an electron 'jumps' from a lower to higher orbital level, it absorbs a specific wavelength of electromagnetic radiation specific to the ‘jump’. Vice versa, when an electron 'jumps' to a lower orbital level is emits an equivalent  and specific wavelength of electromagnetic radiation.  

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5 0
4 years ago
What are five key accomplishments of Marie Curie?
shusha [124]

Her discovery of radium and polonium.

She was the first woman to win a nobel prize and a second one as well!

Marie Curie was the first women to be appointed as the director of the physics lab at Sorbonne.

She was also the first woman to become a professor at the University of Paris.

She helped make radiology units which were again portable and those assisted the field surgeons during the war.

Hope this helps :))


5 0
3 years ago
Which elements are metals? check all that apply. rhenium (re) boron (b) lithium (li) krypton (kr) phosphorus (p) mercury (hg)?
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Lithium, mercury, and rhenium are all metals.

4 0
4 years ago
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How many grams of KCIO3 will be formed from 3.58g of KCI
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Answer:

5 mols

Explanation:

7 0
3 years ago
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