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zavuch27 [327]
2 years ago
13

33,792 ft = ? miles. can you help me please

Chemistry
1 answer:
konstantin123 [22]2 years ago
7 0

Answer:

6.4 miles

Could you please give me brainliest, I need it.

Explanation:

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Three isotopes of silicon have mass numbers of 28,29, and 30 with an average atomic mass of 28.086 what does this say about the
Sedbober [7]

Answer is: silicon isotope with mass number 28 has highest relative abundance, this isotope is the most common of these three isotopes.

Ar₁(Si) = 28; the average atomic mass of isotope ²⁸Si.  

Ar₂(Si) =29; the average atomic mass of isotope ²⁹Si.  

Ar₃(Si) =30; the average atomic mass of isotope ³⁰Si.  

Silicon (Si) is composed of three stable isotopes, ₂₈Si (92.23%), ₂₉Si (4.67%) and ₃₀Si (3.10%).

ω₁(Si) = 92.23%; mass percentage of isotope ²⁸Si.  

ω₂(Si) = 4.67%; mass percentage of isotope ²⁹Si.

ω₃(Si) = 3.10%; mass percentage of isotope ³⁰Si.

Ar(Si) = 28.086 amu; average atomic mass of silicon.  

Ar(Si) = Ar₁(Si) · ω₁(B) + Ar₂(Si) · ω₂(Si)  + Ar₃(Si) · ω₃(Si).  

28,086 = 28 · 0.9223 + 29 · 0.0467 + 30 · 0.031.

8 0
3 years ago
Which atom has the largest atomic radius
Greeley [361]
francium , in the Periodic table the atomic radius increases from top to bottom in a group, and decreases from left to right across a period. making helium is the smallest element, and francium the largest.
6 0
3 years ago
A flexible container has 5.00 L of nitrogen gas at 298 K. If the temperature is increased to 333 K, what will be the new volume
-BARSIC- [3]

Answer:

5.59 L

Explanation:

I think this correct

4 0
2 years ago
Read 2 more answers
5. Determine the number of liters in 4.32 grams of water (H2O). Answer: --_ 5.37L H2O__​
MariettaO [177]

Answer:

4.32 \frac{1}{18.01} ×\frac{22.4}{1} = 5.37

Explanation:

22.4 is how many liters per mole. 18.01 is the mass of H2O.

8 0
2 years ago
List the electronegativity trends for the elements from the periodic table
sesenic [268]

Answer:

2.1

Explanation:

hindi po ako sure

8 0
3 years ago
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