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
Yuki888 [10]
3 years ago
12

A 1.44-g sample of an unknown pure gas occupies a volume of 0.335 L at a pressure of and a temperature of 100.0°C. The unknown g

as is ________.
Chemistry
1 answer:
Zepler [3.9K]3 years ago
8 0

Answer:

Xenon

Explanation:

Step 1: Given data

  • Mass (m): 1.44 g
  • Volume (V): 0.335 L
  • Pressure (P): 1.00 atm (I looked it up)
  • Temperature (T): 100.0°C

Step 2: Convert the temperature to Kelvin

K = °C + 273.15 = 100.0°C + 273.15 = 373.2 K

Step 3: Calculate the number of moles (n)

We will use the ideal gas equation.

P × V = n × R × T

n = P × V / R × T

n = 1.00 atm × 0.335 L / (0.0821 atm.L/mol.K) × 373.2 K

n = 0.0109 mol

Step 4: Calculate the molar mass of the gas

M = 1.44 g / 0.0109 mol = 132 g/mol

Step 5: Identify the gas

The gas with a molar mass of about 132 g/mol is xenon.

You might be interested in
What is an empirical formula
Nastasia [14]

Answer:

a formula giving the proportions of the elements present in a compound but not the actual numbers or arrangement of atoms.

Explanation:

4 0
2 years ago
Can someone check that I did this correctly? What does it mean by “networks” and “formula units”?
ale4655 [162]
Idk i just need to ask a question
6 0
3 years ago
Consider this initial-rate data at a certain temperature for the reaction described by N2O3(
Yuliya22 [10]

<span><span>N2</span><span>O3</span><span>(g)</span>→NO<span>(g)</span>+<span>NO2</span><span>(g)</span></span>

<span><span>[<span>N2</span><span>O3</span>]</span> Initial Rate</span>
<span>0.1 M     r<span>(t)</span>=0.66</span> M/s
<span>0.2 M     r<span>(t)</span>=1.32</span> M/s
<span>0.3 M     r<span>(t)</span>=1.98</span> M/s

We can have the relationship:

<span>(<span><span>[<span>N2</span><span>O3</span>]/</span><span><span>[<span>N2</span><span>O3</span>]</span>0</span></span>)^m</span>=<span><span>r<span>(t)/</span></span><span><span>r0</span><span>(t)
However,
</span></span></span>([N2O3]/[N2O3]0) = 2

Also, we assume m=1 which is the order of the reaction.

Thus, the relationship is simplified to,

r(t)/r0(t) = 2

r<span>(t)</span>=k<span>[<span>N2</span><span>O3</span>]</span>

0.66 <span>M/s=k×0.1 M</span>

<span>k=6.6</span> <span>s<span>−<span>1</span></span></span>

6 0
2 years ago
Read 2 more answers
Give the number of atoms of each type of sodium carbonate
Bad White [126]

Answer:What is the question

Explanation:

6 0
2 years ago
Which of the following are compounds (select all that apply)
olga2289 [7]

Answer:

KNO2, KBr

Explanation:

Chemical compounds are any substance composed of identical molecules consisting of atoms of two or more chemical elements. So NO2 and KBr are compounds, Br2 and Fe are not.

3 0
2 years ago
Other questions:
  • Which agent of erosion can create a limestone cave?
    15·2 answers
  • 23 Which term identifies the half-reaction that occurs at the anode of an operating electro­chemical cell?
    8·2 answers
  • Which statement describes the dependent variable?
    7·1 answer
  • Rank these molecules or groups of molecules by when mammals use them as fuel, from right after a meal through only during starva
    11·1 answer
  • Which elements would have properties similar to those of boron (B) ? Se , Li , and Be Al , Ga , and In C, N, and O Na , Mg , and
    12·1 answer
  • Which of the following is not a theory supporting global warming?
    7·2 answers
  • Which of these is a difference between a single skin cell and the skin tissue that covers an entire hand?
    7·2 answers
  • Can someone tell me the answer and how to do the problem?
    12·1 answer
  • An ideal gas is made up of gas particles that...
    11·1 answer
  • A 4.7-L sealed bottle containing 0.33 g of liquid ethanol,C₂H₆O, is placed in a refrigerator and reaches equilibrium with its va
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!