Chemistry, 12.08.2019 23:30 nmartin5185

If 50.0 dm3 of methane, ch4, react with 10.0 dm3 of air, calculate the grams of water produced.
ch4 (g) + 2 o2 (g) --> co2 (g) + 2 h2o (l)

Answers: 3

Show answers

Answers

Answer from: sweetLips230

Answer : The mass of H_2O produced will be, 8.1 grams.

Explanation : Given,

Volume of CH_4 = 50dm^3=50L (1dm^3=1L)

Volume of O_2 = 10dm^3=10L

Molar mass of H_2O = 18 g/mole

First we have to calculate the moles of CH_4 and O_2 .

As, 22.4 L volume of CH_4 present in 1 mole of CH_4

So, 50 L volume of CH_4 present in $\frac{50}{22.4}=2.23$ mole of CH_4

and,

As, 22.4 L volume of O_2 present in 1 mole of O_2

So, 10 L volume of O_2 present in $\frac{10}{22.4}=0.45$ mole of O_2

Now we have to calculate the limiting and excess reagent.

The balanced chemical reaction is,

$CH_4+2O_2\rightarrow CO_2+2H_2O$

From the balanced reaction we conclude that

As, 2 moles of O_2 react with 1 mole of CH_4

So, 0.45 moles of O_2 react with $\frac{0.45}{2}=0.225$ moles of CH_4

From this we conclude that, CH_4 is an excess reagent because the given moles are greater than the required moles and O_2 is a limiting reagent and it limits the formation of product.

Now we have to calculate the moles of H_2O .

As, 2 moles of O_2 react to give 2 moles of H_2O

As, 0.45 moles of O_2 react to give 0.45 moles of H_2O

Now we have to calculate the mass of H_2O .

$\text{Mass of }H_2O=\text{Moles of }H_2O\times \text{Molar mass of }H_2O$

$\text{Mass of }H_2O=(0.45mole)\times (18g/mole)=8.1g$

Therefore, the mass of H_2O produced will be, 8.1 grams.

Answer from: Quest

alienation, transformation, consumption, and the relativity of truth.

you can choose any one of these, they are all important themes.

these themes reflect the distinct sensibilities of both the modernist and postmodern aesthetic movements. (from google, you should paraphrase)

hope this !

- melanie

Answer from: Quest

the correct answer is b. a strong acid completely dissociates to its ions when dissolved in water. $hbr$ completely dissociates to $h^+$ and $br-$ ions. a is incorrect because $h_2s$ does not fully ionize to $h^+$ and $hs^-$ ions and some remain as the compound $h_2s$ . c and d are incorrect because, $li_2o$ and $libr$ do not fall into the category of bronsted lowry acids. a bronsted lowry acid is a proton donor and since both molecules do not have a proton to donate they are not bronsted lowry acids. likewise, if we use the lewis acid definition, they cannot be acids. a lewis acid is an electron pair acceptor. both $li_2o$ and $libr$ have a complete octet so can not accept any electrons which disqualifies them as acids.

Other questions on the subject: Chemistry

Chemistry, 22.06.2019 04:30, falishaduncanovmtz2

Electrons are extremely important to what area of technology? a) anti-aging research b) household product development c) electronics d) drug discovery

Answers: 3

continue

Chemistry, 22.06.2019 07:40, pillgiing

The formation of a solid, also known as a is an indication of a chemical change. precipitate particulate particle powder

Answers: 3

continue

Chemistry, 22.06.2019 08:30, ali7862

If i initially have a gas at a pressure of 12 atm, a volume of 23 liters, and a temperature of 200 k, and then i raise the pressure to 14 atm and increase the temperature to 300 k, what is the new volume of the gas?

Answers: 1

continue

Chemistry, 23.06.2019 02:00, xbeatdroperzx

Which statement is true about the model of the electromagnetic spectrum a: it change the frequencies of light. b: it compare wavelengths of light. c: the color of light waves can be changed using the model. d: the intensities of light waves can be decreased using the model.

Answers: 2

continue

You know the right answer?

If 50.0 dm3 of methane, ch4, react with 10.0 dm3 of air, calculate the grams of water produced.