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cestrela7 [59]
1 year ago
8

Please assist me with chemistry assessment

Chemistry
1 answer:
Lera25 [3.4K]1 year ago
7 0

Answer:

I don't know

Explanation:

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How could an alpha particle pass straight through the metal foil and strike the center of the phosphor screen on the other side
EleoNora [17]
It was due to the metal foil in which the alpha particles can't even pass through. This experiment conducted by Rutherford led to the discovery of protons.
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4 years ago
Which one of the following questions about animals called affairs, pictured above, is the scientific question?
babymother [125]

The answer is B...


because any of the others could have an opinion based answer



5 0
3 years ago
The volume of a gas is 550 mL at 960 mm Hg and 200.0 C. What volume
Masja [62]

Answer:

The volume will be 568.89 mL.

Explanation:

Boyle's law says that "The volume occupied by a given gaseous mass at constant temperature is inversely proportional to pressure"

Boyle's law is expressed mathematically as:

Pressure * Volume = constant

or P * V = k

Gay-Lussac's law indicates that when there is a constant volume, as the temperature increases, the pressure of the gas increases. And when the temperature is decreased, the pressure of the gas decreases. That is, the pressure of the gas is directly proportional to its temperature. Gay-Lussac's law can be expressed mathematically as follows:

\frac{P}{T}=k

Where P = pressure, T = temperature, K = Constant

Finally, Charles's law indicates that as the temperature increases, the volume of the gas increases and as the temperature decreases, the volume of the gas decreases. In summary, Charles's law is a law that says that when the amount of gas and pressure are kept constant, the quotient that exists between the volume and the temperature will always have the same value:

\frac{V}{T}=k

Combined law equation is the combination of three gas laws called Boyle's, Charlie's and Gay-Lusac's law:

\frac{P*V}{T} =k

Studying an initial state 1 and a final state 2, it is fulfilled:

\frac{P1*V1}{T1} =\frac{P2*V2}{T2}

In this case:

  • P1= 960 mmHg
  • V1= 550 mL
  • T1= 200 C= 473 K (being 0 C=273 K)
  • P2= 830 mmHg
  • V2= ?
  • T2= 150 C= 423 K

Replacing:

\frac{960 mmHg*550 mL}{473K} =\frac{830 mmHg*V2}{423 K}

Solving:

V2=\frac{423 K}{830 mmHg} *\frac{960 mmHg*550 mL}{473K}

V2= 568.9 mL

<u><em>The volume will be 568.89 mL.</em></u>

4 0
3 years ago
A student can hold her breath for 94 seconds if another student records that the time she can hold her breath is 92 seconds, wha
Studentka2010 [4]

Answer:  -2.13%

Explanation:

I will assume that the correct time is 94 seconds, since it is stated as a fact.  The measured time of 92 seconds is -2 seonds from the actual.  That gives a percent error of:

[(Measured-Actual)/Actual] or (-2/94) or -2.13%

6 0
3 years ago
What is the ionic compound formula sodium nitride?​
Leona [35]

Answer:

In ionic compounds, the charges of constituent ions must balance. This can be achieved by having three sodium ions per nitride ion. Therefore, the formula of sodium nitride is Na3N

Explanation:

7 0
3 years ago
Read 2 more answers
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