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alukav5142 [94]
3 years ago
10

Under what pressure will a scientist need to store 0.400 moles of gas if the container has a volume of 200.0 mL and the temperat

ure is kept at 23.0 C?
Chemistry
2 answers:
STALIN [3.7K]3 years ago
5 0

Answer: 48.60 atm

Explanation: Using ideal gas equation:

PV=nRT

P=\frac{nRT}{V}

P= pressure = ? atm

V= volume =200ml=0.2L  

n = no of moles = 0.400

R= gas constant =0.0821 Latm/molK

T = Temperature =23^0C=(23+273)K=296K

P=\frac{0.400\times 0.0821\times 296K}{0.2L}=48.60atm

Nutka1998 [239]3 years ago
4 0
P*V=n*R*T where p is the pressure, v the volume in L, n the quantity in moles, R a standard number that should be given and T the temperature in Kelvin
R=8.32 (usually)
T(in K)=273+T(in Celsius) so T=296K
P*V=n*R*T
P=n*R*T/V
P=0.4*8.32*296/0.2
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How many grams of KBr are contained in 150. mL of a 0.154 M solution of potassium bromide?
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aliina [53]

Answer:

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Explanation:

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5 0
3 years ago
Read 2 more answers
Which is the correct number of moles of NO that is produced from 13.2 moles of oxygen
Oksanka [162]
<h3>Answer:</h3>

10.6 mol NO

<h3>General Formulas and Concepts:</h3>

<u>Math</u>

<u>Pre-Algebra</u>

Order of Operations: BPEMDAS

  1. Brackets
  2. Parenthesis
  3. Exponents
  4. Multiplication
  5. Division
  6. Addition
  7. Subtraction
  • Left to Right<u> </u>

<u>Chemistry</u>

<u>Stoichiometry</u>

  • Using Dimensional Analysis
<h3>Explanation:</h3>

<u>Step 1: Define</u>

[RxN - Balanced] 4NH₃ + 5O₂ → 4NO + 6H₂O

[Given] 13.2 mol O₂

<u>Step 2: Identify Conversions</u>

[RxN] 5 mol O₂ → 4 mol NO

<u>Step 3: Stoich</u>

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  2. [DA] Multiply/Divide [Cancel out units]:                                                         \displaystyle 10.56 \ mol \ NO

<u>Step 4: Check</u>

<em>Follow sig fig rules and round. We are given 3 sig figs.</em>

10.56 mol NO ≈ 10.6 mol NO

5 0
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mass = 250 g

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Answer C

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3 years ago
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