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
Nadusha1986 [10]
3 years ago
14

A gas sample is collected in a 0.279 L container at 22.7 °C and 0.764 atm. If the sample has a mass of 0.320 g, what is the iden

tity of the gas? Group of answer choices g
Chemistry
1 answer:
Sindrei [870]3 years ago
4 0

Answer:

HCl

Explanation:

<em>Choices:</em>

<em>CO: 28.01g/mol</em>

<em>NO₂: 46g/mol</em>

<em>CH₄: 16.04g/mol</em>

<em>HCl: 36.4g/mol</em>

<em>CO₂: 44.01g/mol</em>

<em />

It is possible to identify a substance finding its molar mass (That is, the ratio between its mass in grams and its moles). It is possible to find the moles of the gas using general ideal gas law:

PV = nRT

<em>Where P is pressure of gas 0.764atm; V its volume, 0.279L; n moles; R gas constant: 0.082atmL/molK and T its absolute temperature, 295.85K (22.7°C + 273.15).</em>

Replacing:

PV = nRT

PV / RT = n

0.764atm*0.279L / 0.082atmL/molKₓ295.85K = n

<em>8.786x10⁻³ = moles of the gas</em>

<em />

As the mass of the gas is 0.320g; its molar mass is:

0.320g / 8.786x10⁻³moles = 36.4 g/mol

Based in the group of answer choices, the identity of the gas is:

<h3>HCl</h3>

<em />

You might be interested in
PLEASE HELP WILL MARK BRAINLIEST ! Where did the mass of the forest trees come from? What happens to that mass when the forest b
Oxana [17]

Answer:

it is a flat mass

Explanation:

Because it was used up.

3 0
3 years ago
Megan prepares a pitcher of lemonade by adding a quarter cup of granular sugar to the mixture. Which action should she take so t
Licemer1 [7]
Can someone please help me with my chem review
3 0
2 years ago
Read 2 more answers
5. How can you tell the difference between CuS and Cu2S
Oxana [17]
Prominent copper sulfide minerals include Cu2S (chalcocite) and CuS (covellite).
8 0
3 years ago
Neutralizing an olympic size swimming pool is conceptually very similar to performaing a massive titration experiment. Suppose a
MrRissso [65]

Answer:

6,97x10⁻³ gallons

Explanation:

pH is defined as:

pH = -log [H⁺]

Thus, you need to have, in the end:

10⁻⁷ = [H⁺]

And you have, in the first:

10^{-9,33} = [H⁺]

The volume of swimming pool is:

700'000 galllons ×\frac{3,78541 L}{1 gallon} = 2649787 L

Thus, the moles of H⁺ in the first and in the end are:

First:

10^{-9,33}mol/L × 2649787L = 1,24x10⁻³ moles

End:

10^{-7}mol/L × 2649787L = 0,265 moles

Thus, the moles of H⁺ you need to add are:

0,265 - 1,24x10⁻³ = <em>0,26376 moles</em>

These moles comes from 10M HCl, thus, the volume in gallons you need to add are:

0,26376moles*\frac{1L}{10moles}* \frac{1gallon}{3,78541L} =

<em>6,97x10⁻³ gallons</em>

<em></em>

I hope it helps!

7 0
3 years ago
A solution containing aluminium ions reacts with a solution containing hydroxide ions to form a
Xelga [282]

Answer:

D

Explanation:

the answer is d white precipitate

3 0
3 years ago
Read 2 more answers
Other questions:
  • 1. A student calculated the theoretical yield of BaSO4(s) in a precipitation experiment to be 1.352 grams. When she filtered, dr
    5·1 answer
  • Which actions are part of the dissolution process of an iconic solute in water?
    10·1 answer
  • need help in getting a element superhero and the element i choose is Helium can you give me some ideas of a superhero to make us
    11·1 answer
  • Under what pressure will a scientist need to store 0.400 miles of gas if the container has a volume of 200.0 mL and the temperat
    8·1 answer
  • The half life or radium 226 is 1630 years
    12·1 answer
  • З BaCl2 how many atoms​
    12·1 answer
  • Which of the following terms refers to areas of gas on the suns surface that are cooler than the gases around them?
    14·2 answers
  • The Question is attached :(
    10·1 answer
  • The tabulated data were collected for this reaction:
    13·1 answer
  • Can someone help with b and c ??! Real answers :) 50 POINTS ;)
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!