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
Ann [662]
3 years ago
8

Certain race cars use methanol (CH 3 OH) as fuel. The combustion of 9.8 moles of methanol produces what mass of water?

Chemistry
1 answer:
IrinaK [193]3 years ago
3 0

Answer: Moles of CH3OH = 9.8 moles

The given equation for combustion of methanol is,

2 CH3OH (l) + 3 O2(g) → 2CO2 (g) + 4 H2O(l)

The moles of water can be calculated from the above balanced equation i.e 2 mol of CH3OH  on combustion forms 4 moles of H2O.

Thus the number of mole of H2O = 9.8 mol CH3OH = 20 mol H2O

Thus the number of moles of water has found to be 20 mol H2O.

Explanation:

You might be interested in
Which of the following elements will produce the same spectrum?
Bond [772]
We are given with the following pairs:
<span>carbon and oxygen
hydrogen and helium
gold and silver
and we are asked if there is a pair that will produce the same spectrum. The answer is
</span>No two elements produce the same spectrum.This is because a light spectrum is unique to each element.
3 0
3 years ago
Read 2 more answers
These two questions please
zhenek [66]

Answer:

1.) 3

2.) 60 CM

Explanation:

1. Density=\frac{MASS}{VOLUME}= \frac{75}{25}

2. Length*Width*Height=3*10*2

6 0
3 years ago
Read 2 more answers
Relating ideas explain why ionic crystals melt at much higher temperatures than typical covalent molecular crystals.
gayaneshka [121]
Because of the way the temp is set up
6 0
4 years ago
200.0 mL of 3.85 M HCl is added to 100.0 mL of 4.6 M barium hydroxide. The reaction goes to completion. What is the concentratio
Ede4ka [16]

Answer:

2.387 mol/L

Explanation:

The reaction that takes place is:

  • 2HCl + Ba(OH)₂ → BaCl₂ + 2H₂O

First we <u>calculate how many moles of each reagent were added</u>:

  • HCl ⇒ 200.0 mL * 3.85 M = 203.85 mmol HCl
  • Ba(OH)₂ ⇒ 100.0 mL * 4.6 M = 460 mmol Ba(OH)₂

460 mmol of Ba(OH)₂ would react completely with (2*460) 920 mmol of HCl. There are not as many mmoles of HCl so Ba(OH)₂ will remain in excess.

Now we <u>calculate how many moles of Ba(OH)₂ reacted</u>, by c<em>onverting the total number of HCl moles to Ba(OH)₂ moles</em>:

  • 203.85 mmol HCl * \frac{1mmolBa(OH)_{2}}{2mmolHCl}= 101.925 mmol Ba(OH)₂

This means the remaining Ba(OH)₂ is:

  • 460 mmol - 101.925 mmol = 358.075 mmoles Ba(OH)₂

There are two OH⁻ moles per Ba(OH)₂ mol:

  • OH⁻ moles = 2 * 358.075 = 716.15 mmol OH⁻

Finally we <u>divide the number of OH⁻ moles by the </u><u><em>total</em></u><u> volume</u> (100 mL + 200 mL):

  • 716.15 mmol OH⁻ / 300.0 mL = 2.387 M

So the answer is 2.387 mol/L

7 0
3 years ago
Why is an electron ejected when green light hits the metal?
Roman55 [17]

Explanation:

If a large photon strikes the surface, that has enough strength to take out an electrode, which will then travel to the positive side since it is negative. Current is flowing at this stage. Since the reduced photons will be unable to distinguish between atoms, no power can pass.

6 0
3 years ago
Other questions:
  • How many neutrons does element X have if its atomic number is 20 and its mass number is 82?
    15·1 answer
  • A 24.1-g mixture of nitrogen and carbon dioxide is found to occupy a volume of 15.1 L when measured at 870.2 mmHg and 31.2oC. Wh
    13·1 answer
  • Determine the reagents needed and the synthetic intermediate that is formed in the conversion of the secondary alcohol into the
    9·1 answer
  • When an atom loses one or more electrons, this atom becomes a
    5·1 answer
  • Does anyone have any information about "trititanium pentoxide" or "titanium oxide"? ​
    13·1 answer
  • Which of the following is the best description of the results of a chemical reaction?
    7·1 answer
  • In a solution the___is the liquid that the____is added to.
    6·1 answer
  • The graph shows the distance an object travel in 11 seconds which answer choice best describes the movement of the object betwee
    15·1 answer
  • What do you know about plants cell and animal cells?<br> restate the answer and answer it
    6·1 answer
  • What occurs in photosynthesis reaction
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!