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Gwar [14]
3 years ago
5

How are the sizes of stars measured? I just need a simple answer

Chemistry
1 answer:
S_A_V [24]3 years ago
7 0
They are determined by the length of time it takes for light to travel from the Earth to the desired star
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While watching a popular space-based science fiction movie, space
Jobisdone [24]

Answer:

Sound waves required a medium.

Explanation:

In space, there is only vacuum hence no any medium for sound wave travel.

Since sound waves are mechanical waves, they require a material medium such as air, hence no sound transmission.

5 0
3 years ago
Whitney's lung capacity was measured as 3.3 l at a body temperature of 37 ∘c and a pressure of 746 mmhg . how many moles of oxyg
myrzilka [38]

the ideal gas equation is PV=nRT  
 where P=pressure  
 V=Volume  
 n=no. of moles  
 R=universal gas constant  
 T=temperature  
 The universal gas constant (R) is 0.0821 L*atm/mol*K    
 a pressure of 746 mmhg =0.98 atm= 1 atm (approx)   
 T=37 degrees Celsius =37+273=310 K (convert it to Kelvin by adding 273)    
 V=0.7 L (only getting oxygen, get 21% of 3.3L)    
 Solution:  
 (1 atm)(0.7 L)=n(0.0821 L*atm/mol*K)(310 K)  
 0.7 L*atm=n(25.451 L*atm/mol)  
 n=0.0275 mole   
 Answer:   
n=0.0275 mole of oxygen in the lungs.
4 0
3 years ago
Escoge uno de los derechos de la siguiente lista que están Escogidos en el código de la niñez y adolescencia escribe en una hoja
Lera25 [3.4K]

Answer:

Hehe I don't know spanish -

Explanation:

6 0
3 years ago
Do you think the video game "Minecraft" will ever die?
qwelly [4]

Answer:

No.

Explanation:

:⊃

4 0
3 years ago
Read 2 more answers
HELP<br> FREE BRAINLIEST
liberstina [14]
The universe comes into existence is first
The first neutral atoms form is second
The universe begins expanding is third
Gases form that will later go to shape stars and galaxies is fourth
Atomic nuclei form is last

I'm almost certain that is correct. Do not take my word for this.
6 0
3 years ago
Read 2 more answers
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