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
devlian [24]
3 years ago
6

How many grams of water will I obtain from the combustion of 0.9249 mol of pentane (C5H12) in the following reaction?

Chemistry
1 answer:
NNADVOKAT [17]3 years ago
8 0

Answer:

Mass = 2.7 g

Explanation:

Given data:

Number of moles of C₅H₁₂ = 0.9249 mol

Mass of water = ?

Solution:

Chemical equation:

C₅H₁₂ + 8O₂     →     5CO₂ + 6H₂O

Now we will compare the moles of water with pentane.

                 C₅H₁₂       :         H₂O

                    1            :           6

                0.9249     :          1/6×0.9249= 0.15 mol

Mass of water:

Mass = number of moles × molar mass

Mass = 0.15 mol × 18 g/mol

Mass = 2.7 g

You might be interested in
Write an equation that shows the formation of the chloride ion from a neutral chlorine atom
jeka57 [31]

The gaining of electron by an atom results in the formation of anion shown by the negative charge on the atom whereas lose of electron results in the formation of cation shown by positive charge on the atom. The atom lose or gain electron to complete their octet and get stable in nature.

The chlorine atom will gain an electron and form chloride anion with one negative charge on it. The chloride ion is more stable in nature compared to the chlorine atom due to complete octet of chloride ion by gaining of electron.

Electronic configuration of chlorine atom is:

[Ne]3s^{2}3p^{5}

By gaining of one electron, electronic configuration of chloride ion is:

[Ne]3s^{2}3p^{6}

Thus, the equation that shows the formation of the chloride ion from a neutral chlorine atom is:

Cl+1e^{-}\rightarrow Cl^{-}

4 0
3 years ago
Which of the following alcohols will give a positive chromic acid test?
Sindrei [870]
The answer is both B and C

positive chromic acid test is indicated by disappearance of orange colour from chromic ions and appearance of blue-green color from Chromium (iii) ion (reduction of chromium ion from CrO4 - to Cr3+)

positive chromic test indicated functional groups that can be oxidized.

cyclohexanol can be oxidized to become cyclohexanone

and pentan-3-ol can be oxidized to become pentan-3-one

hence both B and C will show positive chromic acid test

A) tert butanol although contains alcohol functional group, cannot be further oxidized as it is a tertiary alcohol

3 0
2 years ago
A scientist found a new species in a rain forest. The species was small and green in color. She examined one of its many cells a
Serhud [2]
It's probably animal if that's what's you're asking.
7 0
3 years ago
Read 2 more answers
Passing an electric current through a sample of water (H2O) can cause the water to decompose into hydrogen gas (H2) and oxygen g
Setler [38]
The balanced chemical reaction is:

<span>2H2O= 2H2 + O2
</span>
We are given the amount of oxygen to be produced in the reaction. The starting point for the calculations will be this amount.

50 g ( 1 mol O2 / 32 g O2 ) ( 2 mol H2O / 1 mol O2 ) ( 18.01 g H2O / 1 mol H2O) = 56.28 g of H2O is needed.

Therefore, the correct answer is the last option.
8 0
3 years ago
Read 2 more answers
Suppose you find a rock that contains some potassium-40 (half-life of 1.3 billion years). you measure the amount and determine t
Alborosie
Equation for Half life :
A = a(0.5)^(t/h)
A is current amount, "a" is initial amount, h is halflife, t is time

5 = 40(0.5)^(t/1.3x10^9)
5/40 = (0.5)^(t/1.3x10^9)
take the log of both sides , power rule
Log(5/40) = (t/1.3x10^9) * Log(0.5)
(1.3x10^9) * Log(5/40) / Log(0.5) = t
3.9x10^9 years = t

And if you think about what a half life is, the time it take for the amount to reduce to half.
40/2 = 20
20/2 = 10
10/2 = 5
It went through 3 half-lifes
3 * 1.3x10^9 = 3.9x10^9 years

7 0
3 years ago
Other questions:
  • The difference between isotopes for the same element will be found in the atoms'
    15·1 answer
  • Solve for ‘x’: 12(x-7)+3(2x+2)=50x-2
    13·1 answer
  • Is hydrogen a molecule or compound
    12·1 answer
  • Classify each element as a metal, nonmetal, or semimetal. br in cr ca drag the appropriate items to their respective bins. view
    15·1 answer
  • Large particles of hardened lava ejected from a volcano are called
    8·1 answer
  • How many moles of chlorine are in 100g Chlorine (CI^2)?
    5·1 answer
  • 2. What is some ways composting can help make our food system more sustainable ?
    12·1 answer
  • can y'all answer this question for me, and i want you to actually answer it. give 3 evidence as to why the sun disappears at nig
    13·1 answer
  • You have a sample containing 2.39 moles of silver. How many atoms of silver are in this sample?
    5·1 answer
  • If you walked 20 m, took a book from a table, and walked back to your seat, what are the distance you traveled and your displace
    8·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!