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Dima020 [189]
3 years ago
6

Beth made the chart shown. Which headings best complete the chart?

Chemistry
1 answer:
lara31 [8.8K]3 years ago
4 0

Answer:

(A) x: use DC y: use DC

Explanation:

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Can you check this for me?
Aliun [14]
Hi, your answer is correct.
3 0
3 years ago
2.2 Chromium has four naturally-occurring isotopes: 4.34% of 50Cr, with an atomic weight of 49.9460 amu; 83.79% of 52Cr, with an
shutvik [7]

Answer:

Average atomic mass  = 51.9963 amu

Explanation:

Given data:

Abundance of Cr⁵⁰ with atomic mass= 4.34% ,  49.9460 amu

Abundance of Cr⁵² with atomic mass = 83.79%,  51.9405 amu

Abundance of Cr⁵³ with atomic mass =9.50%,  52.9407 amu

Abundance of Cr⁵⁴ with atomic mass  = 2.37%,   53.9389 amu

Average atomic mass = 51.9963 amu

Solution:

Average atomic mass = (abundance of 1st isotope × its atomic mass) +(abundance of 2nd isotope × its atomic mass +....n)  / 100

Average atomic mass  = (4.34×49.9460)+(83.79×51.9405) +(9.50×52.9407)+ (2.37×53.9389) / 100

Average atomic mass =  216.7656 + 4352.0945 + 502.9367 +127.8352 / 100

Average atomic mass  = 5199.632 / 100

Average atomic mass  = 51.9963 amu

4 0
3 years ago
What is one major purpose for an animal to produce unusual sounds, display bright
bezimeni [28]
I would say courtship, we this is when an animal would be looking for a mate. They would want to make themselves different and bright colors could attract a possible mate for them. I hope this helps!
7 0
3 years ago
What is Type of compound of ICI
valentina_108 [34]

Answer:

ICI 204448 hydrochloride | C23H27Cl3N2O4 | CID 129407 - structure, chemical names, physical and chemical properties, classification, patents, literature, etc...

hope this helps!! have an amazing day <3

8 0
3 years ago
Read 2 more answers
Hurry help me 30 points
Mandarinka [93]

Answer:

1. B     2. C      3. B or C   4. A   5. A

5 0
3 years ago
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