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
max2010maxim [7]
3 years ago
15

A 1.800-g sample of solid phenol (c6h5oh(s)) was burned in a bomb calorimeter whose total heat capacity is 11.66 kj/∘c. the temp

erature of the calorimeter plus contents increased from 21.36∘c to 26.37∘c. part a write a balanced chemical equation for the bomb calorimeter reaction.
Chemistry
1 answer:
PolarNik [594]3 years ago
3 0
<span>_____Balanced Chemical eqn___ C6H5OH + 7O2 --> 6C02 + 3H20 Firstly, heat of rxn will be absorbed by bobm calorimaeter, so find the qcal qcal = CΔT = (11.66 KJ/°C)(26.37°C- 21.36°C) = 58.42 KJ since the heat of rxn absorbed by calorimeter, assume: qrnx = -qcal = - 58.42 KJ _____q GRAM OF C6H5OH______ Find the number of moles you have by dividing the given grams of C6H5OH by its molar mass (1.8 g C6H5OH)(94 g/mole C6H5OH) = 0.0191 mol C6H5OH then divide qrnx by the number of moles. (-58.42 KJ)/(0.0191 mol C6H5OH) = -3058.64 KJ/mol C6H50H</span>
You might be interested in
How does the comic strip define a polar molecule
zmey [24]

The answer is: A molecule with a difference in electrical charge between two ends.

Electronegativity (χ) is a property that describes the tendency of an atom to attract a shared pair of electrons.

Atoms with higher electronegativity attracts more electrons towards it, electrons are closer to that atom.

For example fluorine has electronegativity approximately χ = 4 and oxygen χ = 3,5, fluorine attracts electron and he has negative charge and oxygen has positive charge.

4 0
3 years ago
Which of the following best explains why you sanded the copper wire before burning it? to create less friction between the coppe
artcher [175]

The copper wire was sanded before burning in order to make sure that copper metal was exposed on the surface of the wire.

Answer: B

Explanation

The copper wire when placed in atmosphere without coating leads to oxidation of copper metal with respect to the impurities present in the atmosphere.

As copper is electropositive in nature, so electronegative ions present in the universe will try to react with copper and the copper will react easily with other elements.

So generally copper wire is coated with color or polymer coating.

In this case, the copper wire without any coating is sanded, so that the eddy sheets or polishing materials on friction with copper wire will remove the impurities by the electrostatic law of conservation of charges and charge transfer.

As the impurities are removed when copper wire is sanded, the copper atoms will be exposed on the surface of the wire leading to burning of copper in the copper wire.

8 0
3 years ago
0.5832 miles =____ft and ___ inches​
arlik [135]

Answer:

0.5832 miles =3079ft and 3.552 inches​  

Explanation:

This is if you are wanting the foot amount and the extra in inches, if you are wanting it in just feet and just inches it would be 3079.296 feet and 36951.552 inches

3 0
3 years ago
If a bat with a mass of 5 kg and acceleration of 2 m/s2 hits a ball whose mass is 0.5 kg in the forward direction, what is the r
asambeis [7]

Answer:

B: 10 N, forward

Explanation:

F= M * a

3 0
3 years ago
Love You All..... Friends........
vivado [14]

Answer:

You 2

Explanation:     <3 <3 <3

3 0
2 years ago
Read 2 more answers
Other questions:
  • How much lead(II) chromate (PbCrO4) is precipitated by mixing 100 mL of aqueous 3 M
    15·1 answer
  • What is 60 kilos in stones and pounds?
    10·1 answer
  • Heat energy is transferred by conduction whenever molecules?
    7·2 answers
  • ABOUTO
    6·1 answer
  • If all three metals were exposed to extremely high temperatures, which would be the last to melt?
    13·2 answers
  • 9
    7·1 answer
  • A compound which is mineral acid is generally classified as a????? urgent please​
    9·2 answers
  • The decay of a living things allows chemical elements to be lost.
    15·1 answer
  • Helium and methane gases are mixed together in a container. what is the ratio of their root-mean-square speeds, i. e. (vrms,heli
    7·1 answer
  • Write correctly a balanced equation for the following "word" equation: Red lead → lead monoxide + oxygen​
    5·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!