1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
suter [353]
3 years ago
10

10. How many moles of Ne are in a 0.50L tube at 200kPa and 50 °C? 11,60​

Chemistry
1 answer:
Nikolay [14]3 years ago
5 0

Answer:

0.04 mol Ne

General Formulas and Concepts:

<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>Chemistry</u>

<u>Gas Laws</u>

Combined Gas Law: PV = nRT

  • P is pressure (in kPa)
  • V is volume (in liters)
  • n is amount of moles
  • R is gas constant - \displaystyle 8.314 \frac{kPa \cdot L}{mol \cdot K}
  • T is temperature (in Kelvins)

Explanation:

<u>Step 1: Define</u>

P = 200 kPa

V = 0.50 L

T = 50°C

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

Temperature Conversion: K = °C + 273.15

<u>Step 3: Convert</u>

  1. Substitute <em>T </em>[TC]:                      K = 50°C = 273.15
  2. Add:                                           K = 323.15

<u>Step 4: Find Moles</u>

  1. Substitute [CBL]:                    \displaystyle (200 \ kPa)(0.50 \ L) = n(8.314 \frac{kPa \cdot L}{mol \cdot K} )(323.15 \ K)
  2. Multiply:                                                                                                             \displaystyle 100 \ kPa \cdot L = n(2686.67 \frac{kPa \cdot L}{mol})
  3. Isolate <em>n</em>:                                                                                                          \displaystyle 0.037221 \ mol = n_{Ne}
  4. Rewrite:                                                                                                            \displaystyle n_{Ne} = 0.037221 \ mol

<u>Step 5: Check</u>

<em>Follow sig fig rules and round. We are given 1 sig figs as our lowest.</em>

0.037221 mol Ne ≈ 0.04 mol Ne

You might be interested in
Given pH = 3.50 Find: [H3O+] and [OH-] Is this acidic, basic or neutral?
lys-0071 [83]

Answer:

Explanation:

Given parameters:

           pH = 3.50

Unknown:

    concentration of [H₃0⁺] = ?

    concentration of [OH⁻] = ?

Solution:

In order to find the unknown, we use some simple expressions which best explains the pH scale and the equilibrium systems of aqueous solutions.

         pH = -log₁₀[H₃O⁺]

         [H₃O⁺] = inverse log₁₀ (-pH) = 10^{-pH} = 10^{-3.5}

          [H₃O⁺] = 3.2 x 10⁻⁴moldm⁻³

       

For the  [OH⁻]:

       we use : pOH = -log₁₀ [OH⁻]

     Recall: pOH + pH = 14

                  pOH = 14 - pH = 14 - 3.5 = 10.5

  Now we plug the value of pOH into pOH = -log₁₀ [OH⁻]

                                   [OH⁻] = 10^{-pOH}

                        [OH⁻] = 10^{-10.5} = 3.2 x 10⁻¹¹moldm⁻³

The solution is acidic as the concentration of H₃0⁺ is more than that of the OH⁻ ions.

                   

8 0
3 years ago
How many minutes are in 9,040 ms
aivan3 [116]

Answer:

0.15066667

I tried, hope this helps :)

7 0
3 years ago
Which substance has a mass is 13.5 grams, and its volume is 5 cm 3.
solmaris [256]

Answer:

Substance is Aluminium

Explanation:

We are given;

Mass; m = 13.5 grams

Volume; V = 5 cm³

Formula for density is;

density = m/V

Density = 13.5/5

Density = 2.7 g/cm³

From the table attached, we can see that the element with a corresponding density of 2.7 is Aluminium

5 0
3 years ago
Which reflects more energy, the atmosphere and clouds or the surface?
LenKa [72]

Answer:

the surface

Explanation:

n/a

8 0
3 years ago
Read 2 more answers
Which of the following identifies the initial type of energy needed to power a hydro plant?
MAXImum [283]

Answer:

kinetic

Explanation:

kinetic energy starts the motion of water which in turn converts electricity

7 0
3 years ago
Other questions:
  • How many significant figures are in 0.723 m
    15·1 answer
  • Which molecule is polar, based on structure? 1) sulfur dioxide 2) carbon disulphide 3) ethylene 4) carbon tetrachloride
    13·2 answers
  • What is the descriptions of gas please<br><br><br><br> THANKS!!!!
    15·2 answers
  • If the following elements were to combine with each other, choose which demonstrate the Law of Multiple Proportion. Select all t
    8·1 answer
  • When hydrogen is burned in oxygen to form water, the composition of water formed does not depend on the amount of oxygen reacted
    13·2 answers
  • Enlista cuatro compuestos del carbono,naturales y sintéticos, de uso en la vida cotidiana
    13·2 answers
  • A new potential heart medicine, code-named X-281, is being tested by a pharmaceutical company, Pharma-pill. As a research techni
    5·1 answer
  • URGENTTTTT What is the correct formula when Al+3 combines with CrO4-2
    15·1 answer
  • Convert the following a) 8.43 Km/week to millimeters/second
    9·1 answer
  • What is the chemical formula for the conjugate acid of the base trimethylamine (ch3)3n?
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!