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
pishuonlain [190]
3 years ago
7

How many grams of H2O can be made from the combustion of 3.75 liters of C7H14 and an excess of O2 at STP?

Chemistry
1 answer:
Kitty [74]3 years ago
3 0

Answer:

21.10g of H2O

Explanation:

We'll begin by writing the balanced equation for the reaction. This is given below:

2C7H14 + 21O2 —> 14CO2 + 14H2O

From the balanced equation above, 2L of C7H14 produced 14L of H2O.

Therefore, 3.75L of C7H14 will produce = (3.75 x 14)/2 = 26.25L of H2O.

Next, we shall determine the number of mole of H2O that will occupy 26.25L at stp. This is illustrated below:

1 mole of a gas occupy 22.4L at stp

Therefore, Xmol of H2O will occupy

26.25L i.e

Xmol of H2O = 26.25/22.4

Xmol of H2O = 1.172 mole

Therefore, 1.172 mole of H2O is produced from the reaction.

Next, we shall convert 1.172 mole of H2O to grams. This is illustrated below:

Number of mole H2O = 1.172 mole

Molar mass of H2O = (2x1) + 16 = 18g/mol

Mass of H2O =..?

Mass = mole x molar mass

Mass of H2O = 1.172 x 18

Mass of H2O = 21.10g

Therefore, 21.10g of H2O is produced from the reaction.

You might be interested in
Are these correct? Thank you!! If they are not, which do I fix?
Gennadij [26K]
This looks correct to me! <3 have a good day
3 0
3 years ago
Read 2 more answers
What is the meaning of N, E, M, and S in periodic table Need ASAP!
Luba_88 [7]

Answer:

Molybdenum is M, Einsteinium is E, and N is Nitrogen. Lastly, S is sulfur.

4 0
2 years ago
When was the death of all dinosuars?
liberstina [14]
The Cretaceous-Tertiary extinction event , the name given to the die off dinosaurs, they all died off about 65.5 million years ago . They died by climate and geological changes .
4 0
3 years ago
How many moles are in 109 grams of kf
lions [1.4K]

Answer:

Explanation:

Molar mass of KF= 39 + 19= 58g/mol

Mass of KF = 109g

Amount = mass/molar mass

Amount = 109/58

Amount = 1.9moles

4 0
3 years ago
If I go a distance of 5 meters in 30 seconds, what is my<br> speed
Tresset [83]

Answer:

0.166 m/s

Explanation:

speed = distance / time

= 5 / 30

= 0.166 m/s

6 0
3 years ago
Other questions:
  • A sample of helium gas has a pressure of 1.20 atm at 22°c. at what celsius temperature will the helium reach a pressure of 2.00
    14·1 answer
  • Which two structures would provide a postive idenfitacation of a plant cell under a microscope
    6·2 answers
  • Approximately how many mineral species have scientists identified?
    11·2 answers
  • A sample of gas in a balloon has an initial temperature of 21 ∘C and a volume of 1310 L . If the temperature changes to 70 ∘C ,
    15·1 answer
  • For the neutralization reaction involving HNO3 and Ca(OH)2, how many liters of 1.55 M HNO3 are needed to react with 45.8 mL of a
    6·2 answers
  • Which statement describes solstices?
    13·2 answers
  • CaC2 + 2H2O ⟶ C2H2 + Ca(OH)2<br><br> How many moles of water are needed to produce 56.8g C2H2?
    10·1 answer
  • What causes an ice cube to melt when removed from a freezer?
    13·2 answers
  • Please help me with this question!
    8·1 answer
  • Which of the following could be classified as unleavened bread?
    11·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!