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ikadub [295]
2 years ago
8

What are the steps of natural selection?

Chemistry
1 answer:
blagie [28]2 years ago
5 0

Answer:

The five steps involved in the process of natural selection are

Variation • Inheritance • Selection • Time • Adaptation

☆anvipatel77☆

•Expert•

Brainly Community Contributor

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4P+ 5O2 -> P4O10
Ratling [72]
If 4 moles of P is used by 5 mole of O2
then....0.489 moles will be used by 5/4 × .489 = .611 moles of O2

so .611 moles

so if 4 moles of P is burnt , 1 mole of P4O10 is produced ....so for .489 moles...... .489/4=.122 moles !
so mass will be .122× 283.89 = 34.7 grams

so first ans is .611 moles and second is 34.7 grams !

if you have any problem regarding this , just comment !!!
4 0
3 years ago
Read 2 more answers
Which of the following would be considered a compound?<br> He<br> CI<br> NaCl<br> B
kobusy [5.1K]

Answer:

NaCl

Explanation:

because He which is helium gas its an element alone,

Cl which is chlorine is a single element,

B which is Boron and its a single element,

but NaCl which is simply called table sugar is the combination between Na, sodium and Cl, chlorine , so its called a compound not an element.

5 0
3 years ago
An electron in the n=6 level of the hydrogen atom relaxes to a lower energy level, emitting light of ?=93.8nm. find the principa
Rama09 [41]

We can find the principal level or lower level using Rydberg's formula:

1/w = R(1/L² - 1/U²) 

<span>where:</span>

<span>w is the wavelength (93.8 nm),</span>

L is the lower energy level (unknown)

U the upper energy level (n= 6)

R is Rydberg's constant (10,967,758 waves per meter)

Substituing known values into the equation:<span>
1/(9.38 * 10^-8 m.) = 10,967,758(1/L² - 1-36) </span>

Using the solver function of the calculator to get for L:

L = 0.999 <span>
so L = 1. 
<span>The lower level is 1 (the ground state).</span></span>

3 0
4 years ago
Read 2 more answers
Which of the following materials is most likely to eject an electron when hit by a photon?
Usimov [2.4K]

Answer:sodium

Explanation:

3 0
4 years ago
The specific heat of a substance which absorbs 7.5 x 10^3 J of
Veronika [31]

Answer:

9.4 x 10^-4 J/g°C

7 0
3 years ago
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