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kaheart [24]
3 years ago
13

Enter your answer in the provided box.

Chemistry
1 answer:
nexus9112 [7]3 years ago
4 0

Answer:

V₂ = 50.93 L

Explanation:

Initial volume, V_1=43.1\ L

Initial temperature, T_1=24^{\circ} C=24+273=297\ K

Final temperature, T_2=78^{\circ} C=78+273=351\ K

We need to find the final volume of the gas. The relation between the volume and the temperature is given by :

\dfrac{V_1}{T_1}=\dfrac{V_2}{T_2}\\\\V_2=\dfrac{V_1T_2}{T_1}\\\\V_2=\dfrac{43.1\times 351}{297}\\\\V_2=50.93\ L

So, the final volume of the gas is 50.93 L.

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The element chlorine has an atomic weight of 35.5 and consists of two stable isotopes chlorine-35 and chlorine-37. The isotope c
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Answer:

The answer is 37amu

Explanation:

We are given:

Chlorine-35: atomic mass  =35 amu  and percent abundance  =75.5% ≡ 0.755

Chlorine-37: atomic mass  = x amu  and percent abundance  =24.5% ≡ 0.25

From table, relative atomic mass of Chlorine is 35.5

⇒(0.755 × 35) + (24.5 × x) = 35.5

26.402 + 24.5x = 35.5

∴ x = 9.075 ÷ 24.5 = 0.37 ≡ 37.

∴ mass of Chlorine 37 = 37amu

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3 years ago
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modify existing explanations of how nature works.

Explanation:

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3 years ago
1.5 mol sample he occupies a volume of 2.5 L at a pressure of 14.7 atm what will be the pressure of a 1.5 mol sample of h2 gas u
Sergio039 [100]

Answer:

Under the same conditions, the pressure of a 1.5 mol H2 sample is 14.7 atm

Explanation:

Step 1: Data given

Number of moles He = 1.5 moles

Volume = 2.5 L

Pressure of the He sample = 14.7 atm

Step 2: Calculate pressure of H2 gas

p(He) * V(He) = n(He) *R*T

⇒Pressure of Helium gas = 14.7 atm

⇒ Volume of the helium sample = 2.5L

⇒ The number of moles He = 1.5 moles

⇒R = the gas constant = 0.08206 L*atm/mol*K

⇒T = The temperature

p(H2) * V(H2) = n(H2) *R*T

Since the conditions are the same:

-Volume of both samples is 2.5L

- Temperature for both is the same

- the gas constant for both is the same (constant)

- The number of moles for both samples is 1.5 moles

Since all the factor are the same, the pressure will also be the same = 14.7 atm

⇒ Volume of the h2 sample = 2.5L

⇒ The number of moles H2 = 1.5 moles

⇒R = the gas constant = 0.08206 L*atm/mol*K

⇒T = The temperature = same temperature

⇒Pressure of H2 gas = 14.7 atm

Under the same conditions, the pressure of a 1.5 mol H2 sample is 14.7 atm

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4 years ago
Numero de oxidacion <br> Fe + O2=Fe2O3
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Fe =0

O2 =0

Fe in Fe2O3 =+3

O in Fe2O3=-2

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