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uysha [10]
4 years ago
13

Materials with_____ bonds tend to be more easily scratched

Chemistry
1 answer:
iren [92.7K]4 years ago
4 0

Materials with ionic bonds tend to be more easily scratched.

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A presión de 3atm, 7L de un gas a temperatura constante experimenta un cambio ocupando un volumen de 0,5L ¿Cuál será la presión
pantera1 [17]

Answer:

La presión que ejerce es 42 atm.

Explanation:

La ley de Boyle relaciona la presión y el volumen y dice que  el volumen ocupado por una determinada masa gaseosa a temperatura constante, es inversamente proporcional a la presión.

La ley de Boyle se expresa matemáticamente como:

P*V=k

Ahora es posible suponer que tienes un cierto volumen de gas V1 que se encuentra a una presión P1 al comienzo del experimento. Si varias el volumen de gas hasta un nuevo valor V2, entonces la presión cambiará a P2, y se cumplirá:

P1*V1= P2*V2

En este caso:

  • P1= 3 atm
  • V1= 7 L
  • P2= ?
  • V2= 0.5 L

Reemplazando:

3 atm* 7 L= P2* 0.5 L

Resolviendo:

P2=\frac{3 atm*7 L}{0.5 L}

P2= 42 atm

<u><em>La presión que ejerce es 42 atm.</em></u>

3 0
3 years ago
5. Found only in plant cells, I'm as green as can be! I make food for the plant from the sun's
LenKa [72]

Answer:

Chloroplast

Explanation:

Chloroplasts are found in plant cells and are a shade of green, they capture light energy and use it to make energy!

hope i helped you out:)

7 0
3 years ago
What is the pH of a 3.5 x 10-5 M solution of HCl?
Luden [163]

Answer:

pH = 4.45

Explanation:

We need to find the pH of 3.5\times 10^{-5}\ M solution of HCl. We know that, pH of a solution is given by :

pH=-log[H]^+

Put all the values,

pH=-log[3.5\times 10^{-5}]\\\\pH=4.45

So, the pH of the solution of HCl is 4.45.

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3 years ago
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kodGreya [7K]
A is correct .

please vote my answer brainliest. thanks!
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