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Mnenie [13.5K]
4 years ago
15

Compared to the sun , all of the stars that can be observed in the night sky are?

Chemistry
1 answer:
mixer [17]4 years ago
4 0

Answer:

small- even though they are huge suns themselves.

Explanation:

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After the end of a normal inspiration, the volume of air in the lungs is about 2.8 L. Normally quiet inspiration is driven by a
vodka [1.7K]

Answer:

The Volume of the lungs that would produce 2 mmHg pressure decrease is

         V_2 = 2.81 \ L

Explanation:

From the question we are told that

     The volume of air in the lungs is  V = 2.8 \ L

     The pressure difference for quit normal inspiration is P = 2 \ mmHg

      The temperature of air in the lungs T = 37^oC

      The pressure  after normal  expiration is at  T =  760 \ mmHg

     

From ideal gas law we have that

         PV= nRT

Now since  nRT is constant we have that

        P_1 V_1 = P_2 V_2

As the pressure decreased by 2 mmHg the volume becomes

        V_2 = \frac{P_1 V_1}{P_2}

        V_2 = \frac{2.8 * 760}{758}

        V_2 = 2.81 \ L

       

     

3 0
3 years ago
A liquid medicine is labeled as having 5% active ingredient, by volume. If
enyata [817]

Answer:

2.5 mL

Explanation:

Step 1: Given data

  • Concentration of the active ingredient (C): 5% v/v
  • Volume of the medicine (V): 50 mL

Step 2: Calculate the amount of the active ingredient in the medicine

The concentration of the active ingredient is 5% v/v, that is, there are 5 mL of the active ingredient per 100 mL of the medicine. The volume of the active ingredient is 50 mL of the medicine is:

50 mL Med × 5 mL AI/100 mL Med = 2.5 mL AI

4 0
3 years ago
How do all stars form ?
professor190 [17]

Answer:

starts form from a accumulation of gas and dust ,which collapses due to gravity and starts to form stars

6 0
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Does water mess up carbon dating?
xenn [34]

Answer:

THE hard-water effect is a recognized source of error in radiocarbon dating. It causes ages to be over-assessed and arises when the material to be dated, such as mollusc shell or plant, synthesizes its skeleton under water and so uses bicarbonate derived in part from old, inert sources.

https://www.nature.com/articles/240460a0#:~:text=THE%20hard%2Dwater%20effect%20is,part%20from%20old%2C%20inert%20sources.

3 0
3 years ago
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Why cant humans live off sunlight​
Liula [17]
They will have no air and no energy or food. No food for animals, so animals die, and humans die with the lack of food, meat and plants
3 0
3 years ago
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