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
Ira Lisetskai [31]
1 year ago
7

Pls tell me how to solve this!

Chemistry
1 answer:
Anna35 [415]1 year ago
8 0

Answer:

12 seconds

Explanation:

Time taken by 50cm³ of oxygen to diffuse from pinhole

= 1 minute = 60 seconds

⠀

⠀

\textsf{ Rate of oxygen} \sf (O_2) = \frac{50}{60}

⠀

⠀

⠀

<u>Let</u><u> </u><u>time</u><u> </u><u>taken</u><u> </u><u>by</u><u> </u><u>5</u><u>0</u><u>c</u><u>m</u><u>³</u><u> </u><u>of</u><u> </u><u>hydrogen</u><u> </u><u>to</u><u> </u><u>diffuse</u><u> </u><u>from</u><u> </u><u>pinhole</u><u> </u><u>=</u><u> </u><u>t</u><u> </u><u>seconds</u>

⠀

⠀

\textsf {Rate of hydrogen } \sf(H_2) =  \frac{50}{t}

⠀

⠀

⠀

According to the formula

\sf \frac{Rate  \: of  \: hydrogen(H_2)}{Rate \:  of \:  oxygen(O_2) }  =   \sqrt{ \frac{Molar \: mass \: of \:  O_2}{Molar  \: mass \: of \: H_2} }

⠀

⠀

\large  \sf  \frac{50}{t}  \div  \frac{50}{60}  =  \sqrt{ \frac{\cancel{32}\small 16}{\cancel2} }  \\  \\  \sf   \large \frac{ \cancel{50}}{t}  \times  \frac{60}{ \cancel{50}}  =  \sqrt{16}  \\  \\  \sf   \large \frac{60}{t}  = 4 \\  \\  \sf \large  \frac{ \cancel{60} \:  \small12}{ \cancel4}  = t \\  \\    \large \underline{ \boxed{ \tt t = 12 \: seconds}}

⠀

⠀

⠀

<h3><u>Henceforth</u><u>,</u><u> </u><u>the</u><u> </u><u>time</u><u> </u><u>taken</u><u> </u><u>by</u><u> </u><u>5</u><u>0</u><u>c</u><u>m</u><u>³</u><u> </u><u>of</u><u> </u><u>hydrogen</u><u> </u><u>to</u><u> </u><u>diffuse</u><u> </u><u>is</u><u> </u><u>1</u><u>2</u><u> </u><u>seconds</u><u>.</u><u> </u></h3>

⠀

⠀

<h2>Thank you!</h2>
You might be interested in
3. HNO3 + NaHCO3 → NaNO3 + H2O + CO2
Bond [772]

Answer:

hydrogen nitrate + sodium hydrochlorate- sodium nitrate+ water + co2 (acid base reaction)

silver nitrate + calcium chloride - silver chloride+ calcium nitrate ( double displacement reaction)

hydrogen + nitrogen - ammonia gas ( simple contact reaction)

hydrogen peroxide - water + oxygen ( single displacement reaction)

Hope it helps :)

8 0
2 years ago
The dissolution of 0.200 l of sulfur dioxide at 19 °c and 745 mmhg in water yields 500.0 ml of aqueous sulfurous acid. The solut
aivan3 [116]

Answer:

Molarity=1.22\ M

Explanation:

Given:  

Pressure = 745 mm Hg

Also, P (mm Hg) = P (atm) / 760

Pressure = 745 / 760 = 0.9803 atm

Temperature = 19 °C

The conversion of T( °C) to T(K) is shown below:

T(K) = T( °C) + 273.15  

So,  

T₁ = (19 + 273.15) K = 292.15 K  

Volume = 0.200 L

Using ideal gas equation as:

PV=nRT

where,  

P is the pressure

V is the volume

n is the number of moles

T is the temperature  

R is Gas constant having value = 0.0821 L.atm/K.mol

Applying the equation as:

0.9803 atm × 0.200 L = n × 0.0821 L.atm/K.mol × 292.15 K  

⇒n = 0.008174 moles

From the reaction shown below:-

H_2SO_3+2NaOH\rightarrow Na_2SO_3+2H_2O

1 mole of H_2SO_4 react with 2 moles of NaOH

0.008174 mole of H_2SO_4 react with 2*0.008174 moles of NaOH

Moles of NaOH = 0.016348 moles

Volume = 13.4 mL = 0.0134 L ( 1 mL = 0.001 L)

So,

Molarity=\frac{Moles\ of\ solute}{Volume\ of\ the\ solution}

Molarity=\frac{0.016348}{0.0134}\ M

Molarity=1.22\ M

8 0
3 years ago
An element with a mass number of 11 and an atomic number of 5 has how many<br> neutrons?
Goryan [66]

Answer:

6 neutrons

Explanation:

6 neutrons

Boron having an atomic number of 5 means that it will have 5 protons. 11 atomic mass units in total. Neutrons also have a atomic mass unit of 1. So there are 6 neutrons

7 0
2 years ago
Can somebody plz help answer these true or false questions correctly thanks! (Only if u for sure know them) :)
asambeis [7]

Answer:

1. False

2. True

3. False

4. True

5. True

Explanation:

7 0
3 years ago
Someone plz help me
a_sh-v [17]

Answer:

A experimental investigation

3 0
2 years ago
Other questions:
  • There are 1.806×10^25 molecules of water. How many moles of water does the sample contain?
    8·1 answer
  • Which type of microscope can be used to view cellular organelles such as the endoplasmic reticulum and Golgi?
    15·1 answer
  • In the polar molecule HBr, what charge does the H bear
    7·1 answer
  • Which is the main reason cells are replaced in the body?
    11·1 answer
  • How can the difference in the brightness of spectral lines be explained
    12·1 answer
  • Am i right??<br><br>if i'm not pls correct me if i am tell me too
    7·2 answers
  • How are air resistance and friction similar?
    8·2 answers
  • How do pumice and basalt form?
    6·2 answers
  • The energy stored in the chemical bonds of a carbohydrate molecule is
    10·1 answer
  • 2)A relatively unreactive metal that is yellow colored.
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!