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Vinvika [58]
3 years ago
7

Explain the relationship between isotopes, neutrons, atomic mass, and protons.

Chemistry
2 answers:
romanna [79]3 years ago
6 0

Answer:

Atomic mass is the total of number of protons and number of neutrons in an atom or isotope.

Explanation:

Triss [41]3 years ago
5 0

Explanation:

<u>Atomic mass</u>: The sum of no. of protons and no. of neutrons

<u>Protons</u>: a subatomic particle with a positive charge

<u>Neutron</u>: a subatomic particle with no charge (neutral)

<u>Isotopes: </u>the same elements with different atomic mass [Eg. uranium-235, uranium-238. Uranium being one element, can have different mass numbers. Hence Uranium-238 is an isotope of Uranium-235]

<u>Therefore</u>:

<h3>Proton + neutrons= Atomic mass</h3><h3>Δatomic mass= formation of isotopes. </h3>

<em>*Δ= Change in</em>

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Based on the following molecular weight data of polypropylene, determine the degree of polymerization Molecular Weight Range (g/
Lady bird [3.3K]

Answer:

785

Explanation:

Molecular. X. W

Weight

8000-16000 0.05 0.03

16000-24000. 0.017. 0.08

24000-32000. 0.22. 0.18

32000-40000. 0.25. 0.35

40000-48000. 0.22. 0.27

48000-56000. 0.09. 0.09

Mean weight X*M. W*M

12000. 600. 240

20000. 3200. 2000

28000. 6720. 5600

36000. 10080. 10800

44000. 8800. 11880

52000. 3640 3640

Total=33040g\mol 36240

Note before repeat molecular weight m= 3*12.01+6*1.008=

42.08g/mol

Degree of polymerization= total W*M/w=33040/42.08 =785

8 0
3 years ago
How many sig figs are there<br> 5.00000008
djverab [1.8K]

Answer:

2 sig figs.

Explanation:

Sig Fig Rules:

Any non-zero digit is a significant figure.

Any zeros between 2 non-zero digits are significant figures.

Trailing zeros after the decimal are significant figures.

6 0
3 years ago
Please help!!! Is it balanced or unbalanced?
Rzqust [24]
I would say balanced
7 0
3 years ago
Multiple Choice Question
valina [46]

Answer:

Explanation:

i would say not d im not fully sure but id say c

6 0
3 years ago
7. I have 2.50 x 1023 atoms of titanium. How many moles of titanium dol<br> have?
algol13

Answer:

0.42mole

Explanation:

Given parameters:

Number of atoms of titanium  = 2.5 x 10²³atoms

Unknown:

Number of moles  = ?

Solution:

To solve this problem, we must understand that a mole of any substance contains the Avogadro's number of particles.

              6.02 x 10²³ atoms makes up 1 mole of an atom

              2.5 x 10²³ atoms will contain \frac{2.5 x 10^{23} }{6.02 x 10^{23} }   = 0.42mole

4 0
2 years ago
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