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
sdas [7]
3 years ago
8

Find the mass, in grams, of 3.758 mol CH4. ( show work )

Chemistry
1 answer:
vladimir2022 [97]3 years ago
5 0

Answer:

The mass of CH4 is 60, 29 grams.

Explanation:

We use the weight of the atoms C and H for calculate the molar mass:

Weight of CH4= weight C+ 4 x weight H= 12,01 g/mol +4 x 1,008g/mol=

Weight of CH4 =16, 042 g/mol

1molCH4-----16, 042grams

3,758 mol CH4--X= (3,758 mol CH4 x 16, 042 grams)/1 mol CH4=60,285836 grams

You might be interested in
For many purposes we can treat methane as an ideal gas at temperatures above its boiling point of . Suppose the temperature of a
Elza [17]

Answer:

The volume decreases 5.5%

Explanation:

First, the question is incomplete, you are not giving the values of the temperatures and the pressure. However, I managed to find one similar question, and the given data is the temperature is lowered from 21 °C to -8°C, and the pressure decreased by 5%. If your data is different, you should only replace your data in the procedure, and you'll get an accurate result.

Now, with this data, let's see what we can do.

If this is an ideal gas, the equation to use is:

PV = nRT

Now, we know that this gas is suffering a decrease in temperature and pressure, but the moles stay the same so:

n₁ = n₂ = n

The constant R, is the same for both conditions. The only thing that differs here is the volume, temperature, and pressure. Therefore:

P₁V₁ = nRT₁   -----> n = P₁V₁ / RT₁

Doing the same with the pressure and volume 2 we have:

n = P₂V₂ / RT₂

Equalling both expressions and solving for V₂:

P₁V₁ / RT₁ = P₂V₂ / RT₂

V₂ = P₁T₂V₁ / P₂T₁

Now, as we know that P2 is 5% decreased from P1, so P2 = 0.95P1:

V₂ = P₁T₂V₁ / 0.95P₁T₁

The values of temperature in K:

T1 = 21+273 = 294 K

T2 = -8 + 273 = 265 K

Finally, let's calculate the volume:

V₂ = 264*P₁*V₁ / 294*0.95*P₁   ----> P cancels out  

V₂ = 264V₁ / 294*0.95

V₁ = 0.945V₂

With this, we can day that Volume 2 decreases.

Now the percentage change would be using the following expression:

%V = (V₁ - V₂ / V₁) * 100

Replacing the data we have:

%V = V1 - 0.945V₁ / V₁

%V = 0.055V₁ / V₁ * 100

%V = 5.5%

7 0
3 years ago
Which is an element hydrogen , air , carbon dioxide , water​
Basile [38]

Answer:

Hydrogen is an element

Explanation:

Hydrogen is an element with only hydrogen atoms, whereas air, carbon dioxide, and water are all made up of multiple elements with different types of atoms.

8 0
3 years ago
Read 2 more answers
When heating liquid materials in laboratory glassware, a student should always
Lelechka [254]

Answer:

be careful to not hurt yourself

5 0
3 years ago
Read 2 more answers
Because of its high reactivity which element is normally obtained by the electrolysis
katrin [286]

<span>Lithium has a property of high reactivity and to obtain lithium is through electrolysis of its fused salts. Because lithium is very reactive, it is not found free so electrolysis is use to split it apart to get it.  Moreover, Lithium is an alkali metal with single valence electron that is easily given up to form cation, which make it a good conductor of heat and electricity.</span>

<span> </span>

8 0
3 years ago
Use the diagram to determine: How many atoms are on the Right side =___ How many atoms are on the Left side = ____ Is this a Bal
Lady_Fox [76]

Answer:

on the right side two and on left side it is6 yes it is a balanced equation pls mark me as the brainliset hope it helps you

5 0
3 years ago
Other questions:
  • Which of the following will increase the rate of disolving?
    12·1 answer
  • Identify the conjugate acid-base pair in this balanced equation:<br> H2SO4 + 2NaOH → 2H2O + Na2SO4
    8·2 answers
  • The attraction of like water molecules to each other is called _________.
    15·1 answer
  • Review the following statement.
    6·1 answer
  • A piece of solid carbon dioxide, with a mass of 7.8g,is placed in a 4.0-L otherwise empty container at 278C. What is the pressur
    8·1 answer
  • The author of Space Systems: All About Eclipses makes the point that seeing a total solar eclipse is rare. How does the author u
    7·1 answer
  • How many particles of CuCr2O7 are present in a 64.5 gram sample?
    10·1 answer
  • The picture below is a great example of __________ biodiversity.
    13·2 answers
  • A 23.8 mL sample of HCl of unknown concentration is neutralized by 5.45 mL of 0.331 M Ca(OH)2. What is the concentration of the
    10·1 answer
  • What is oxidized and what is reduced in this reaction? cu(s) 2agno3(aq) → cu(no3)2(aq) 2ag(s) cu is reduced and ag is oxidized.
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!