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
Likurg_2 [28]
2 years ago
5

The rate of effusion of a particular gas was measured and found to be 24.0 mL/min. Under the same conditions, the rate of effusi

on of pure methane (CH4) gas is 47.8 mL/min. What is the molar mass of the unknown gas?

Chemistry
1 answer:
Norma-Jean [14]2 years ago
3 0

Answer:

63.6g/mol

Explanation:

Use the equation of effusion:

47.8/24=\sqrt{x/16.04}

solve for x you get 63.6g/mol

You might be interested in
Ammonia, nh3, is a weak base with a kb = 1.8 x 10-5. in a 0.8m solution of ammonia, which has a higher concentration: ammonia (n
insens350 [35]
Answer is: concentration ammonia is higher than concentration of ammonium ion.
Chemical reaction of ammonia in water: NH₃ + H₂O → NH₄⁺ + OH⁻.
Kb(NH₃) = 1,8·10⁻⁵.
c₀(NH₃) = 0,8 mol/L.
c(NH₄⁺) = c(OH⁻) = x.
c(NH₃) = 0,8 mol/L - x.
Kb = c(NH₄⁺) · c(OH⁻) / c(NH₃).
0,000018 = x² /  0,8 mol/L - x.
solve quadratic equation: x = c(NH₄⁺) = 3,79·10⁻³ mol/L.
7 0
3 years ago
Which of the following is a solution? (2 points)
diamong [38]
An alloy maybe could be used as a solid but i really don't think that would be it so i would sayether from an alloy or dirt
7 0
3 years ago
How many grams of Ca(NO3)2 are needed to make 25.0 g of a 15.0% Ca(NO3)2(aq)?
yarga [219]

Answer:

3.75 g.

Explanation:

<em>mass percent is the ratio of the mass of the solute to the mass of the solution multiplied by 100.</em>

<em />

<em>mass % = (mass of solute/mass of solution) x 100.</em>

<em></em>

mass of calcium nitrite = ??? g,

mass of the solution = 25.0 g.

∴ mass % = (mass of solute/mass of solution) x 100

<em></em>

<em>∴ mass of solute (calcium nitrite) = (mass %)(mass of solution)/100</em> = (15.0 %)(25.0 g)/100 = <em>3.75 g.</em>

5 0
3 years ago
In an experiment, shinning which type of light on a strip of metal would be least likely to produce the photoelectric effect?
user100 [1]

C red light isn't an efficient source of light

5 0
3 years ago
Read 2 more answers
Addition of water to an alkyne gives a keto‑enol tautomer product. Draw an enol that is in equilibrium with the given ketone
Marrrta [24]

Addition of water to an alkyne gives a keto‑enol tautomer product and that is the product changed into 2-pentanone, then the alkyne need to had been 1-pentyne. 2-pentyne might have given a combination of 2- and 3-pentanone.

<h3>What is the keto-enol means in tautomer?</h3>

They carries a carbonyl bond even as enol implies the presence of a double bond and a hydroxyl group. The keto-enol tautomerization equilibrium is depending on stabilization elements of each the keto tautomer and the enol tautomer.

  1. The enol that could provide 2-pentanone might had been pent-1- en - 2 -ol. Because an equilibrium favors the ketone so greatly, equilibrium isn't an excellent description.
  2. If the ketone have been handled with bromine, little response might be visible because the enol content material might be too low.
  3. If a catalyst have been delivered, NaOH for example, then formation of the enolate of pent-1-en - 2 - ol might shape and react with bromine.
  4. This might finally provide a bromoform product. Under acidic conditions, the enol might desire formation of the greater substituted enol constant with alkene stability.

7 0
2 years ago
Other questions:
  • According to Newton’s second law of motion, when an object is acted on by an unbalanced force, how will that object respond? It
    12·1 answer
  • Young's experiment is performed with light from excited helium atoms (λ = 496 nm). fringes are measured carefully on a screen 1.
    6·1 answer
  • What is the oxidation state of an individual bromine atom in nabro3?
    7·1 answer
  • A molecule has a carbon atom that is best described by sp2 hybridization. how many other atoms are connected to this carbon? thr
    6·1 answer
  • How did qualitative chemical and enzyme tests help avery identify dna as the transforming principle?
    13·2 answers
  • X-rays with a wavelength of 8.82 nm. Calculate the frequency of the x rays
    7·1 answer
  • Please help - will award brainliest! <br> Which type of reaction does this diagram represent?
    11·2 answers
  • . Give an example of a salt that is less soluble when the temperature increases
    5·2 answers
  • Is hardness an intensive or extensive physical property?.
    10·1 answer
  • What is the approximate partial pressure of oxygen at 1500 m?
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!