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siniylev [52]
3 years ago
5

List the path of the respiratory system

Chemistry
1 answer:
Lena [83]3 years ago
3 0
nasal cavities (or oral cavity) > pharynx > trachea > primary bronchi (right & left) > secondary bronchi > tertiary bronchi > bronchioles > alveoli (site of gas exchange)
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The half-life of na-24 is 15 hours . when there are 1000 atoms of na-24 in a sample , a scientist starts a stopwatch . the scien
marin [14]

125 Each half life it divides by 2 the amount
1000/2=500
500/2=250
250/2=125

8 0
3 years ago
Read 2 more answers
Suppose you mix several liquids in a jar. After a few minutes, the liquids form layers.Is this a homogenous mixture or a heterog
Aliun [14]

heterogeneous mixture, because, the layers are called phases and a heterogeneous mixture has two or more phases. the oil phase is less dense then water so it floats on top, etc.

3 0
3 years ago
A sample of liquid has a mass of 24 grams and a volume of 16 mL what is the density
viktelen [127]

Answer:

<h3>The answer is 1.5 g/mL</h3>

Explanation:

The density of a substance can be found by using the formula

density =  \frac{mass}{volume} \\

From the question we have

density =  \frac{24}{16}  =  \frac{3}{2}  \\

We have the final answer as

<h3>1.5 g/mL</h3>

Hope this helps you

6 0
3 years ago
Read 2 more answers
PLSS HELP!! 50 POINTS AND BRAINLIEST!!
Vladimir [108]

Answer:

The coloring and possibly testing it

7 0
2 years ago
If the enantiomeric excess of a mixture is 75%, what are the % compositions of the major and minor enantiomer?
Maru [420]

Let us say that R is the major enantiomer, while S is the minor enantiomer, therefore the formula for enantiomeric excess (ee) is:

ee = (R – S) * 100%

 

Let us further say that the fraction of R is x (R = x), and therefore fraction of S is 1 – x (S = 1 – x), therefore:

75 = (x – (1 – x)) * 100

75 = 100 x – 100 + 100 x

200 x = 175

x = 0.875

 

Summary of answers:

R = major enantiomer = 0.875 or 87.5%

<span>S = minor enantiomer = (1 – 0.875) = 0.125 or 12.5%</span>

7 0
3 years ago
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