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Ivenika [448]
1 year ago
12

you have a sample of.neon gas that you want to use to.make a glowing sign. you investigate that the gas sample is at 45c and has

a volume of 10 liters. when you place the sample of neon gas your fridge you observe the temperature descreasing to 13.5
Chemistry
1 answer:
beks73 [17]1 year ago
3 0
If it’s asking for the final volume the answer should be 4.25 L (rounded to the nearest hundredth)
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Which statements about a sodium atom (22/11 Na ), are correct?
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Answer:D


Explanation:
Number of electrons=Number of protons
Sodium atom has 1 valence electron
3 0
2 years ago
radioisotope actinium 225 has half life of 10 days, I begin with 16 kg of this isotope, how much will remain after 40 days?
Igoryamba
N(t)=N_{0}(\frac{1}{2})^\frac{t}{\tau_{_\frac{1}{2}}}}\\\\
N_{0}=16kg\\
t=40days\\
\tau_{_\frac{1}{2}}}=10days\\\\\\
N(t)=16kg*(\frac{1}{2})^{\frac{40}{10}}=16kg*\frac{1}{16}=1kg
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2 years ago
Explain the need of the term avarage atomic mass
vodomira [7]

Answer:

The average atomic mass of an element is the sum of the masses of its isotopes, each multiplied by its natural abundance (the decimal associated with percent of atoms of that element that are of a given isotopе). An element does not have an absolute atomic mass.

<em>Hope</em><em> this</em><em> </em><em>helps</em><em> </em><em>:</em><em>)</em>

4 0
3 years ago
The lab just ran out of 1 M HCl that you need to complete the Benzillic Acid lab. The TA tells you there is 12 M HCl in the fume
Viktor [21]

Answer:

0.83 mL

Explanation:

Given data

  • Initial concentration (C₁): 12 M
  • Initial volume (V₁): ?
  • Final concentration (C₂): 1.0 M
  • Final volume (V₂): 10.0 mL

We can calculate the initial volume of HCl using the dilution rule.

C₁ × V₁ = C₂ × V₂

V₁ = C₂ × V₂ / C₁

V₁ = 1.0 M × 10.0 mL / 12 M

V₁ = 0.83 mL

The required volume of the initial solution is 0.83 mL.

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Answer:

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Explanation:

3 0
3 years ago
Read 2 more answers
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