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
4vir4ik [10]
2 years ago
14

When 0. 25 g of the organic compound naphthalene are burned in a bomb calorimeter, the temperature of the water in the calorimet

er increases from 24. 00°C to 26. 43 °C. The calorimeter's heat capacity is 4. 13 kJ/°C. How much heat (q_{rxn}) in kilojoules is released by the combustion of the naphthalene?.
Chemistry
1 answer:
Korvikt [17]2 years ago
8 0

-2.5089 kJ is the amount of heat is released by the combustion of the naphthalene.

<h3>How we calculate the released heat?</h3>

Released amount of heat is calculated by using the below formula:

Q = -mcΔT, where

m = mass of naphthalene = 0.25g

c = specific heat of calorimeter = 4.13 kJ/°C

ΔT = change in temperature = 26.43°C - 24°C = 2.43°C

Putting all these values in the above equation, we get

Q = - (0.25 × 4.13 × 2.43) = - 2.5089 kJ

Hence, - 2.5089 kJ heat is released.

To know more about released heat, visit the below link:

brainly.com/question/13439286

You might be interested in
Horizontal lines indicating a phase change will be at different temperatures depending on the substance.
fredd [130]

Answer:

true

Explanation:

I just know

ieuehdjrj

4 0
3 years ago
Read 2 more answers
How many kilograms are in 6.983 moles of baking soda (NaCHO3)?
nasty-shy [4]
It should be about 0.586620881 kilograms
6 0
3 years ago
When Wolverine’s 10-pound adamantium claws are dissolved in 100 mL of 10 M nitric acid, 10.7 grams of adamantium nitrate are rec
Mazyrski [523]

The percent yield is 71.3 %.

Explanation:

Percent yield is the measure to analyze the success percentage of any experiment .The percent yield of any experiment can be obtained by the ratio of actual or experimental value to expected or theoretical value multiplied with 100.

Percent Yield = \frac{Experimental Outcome}{Theoretical Outcome} *100

So, in the present problem, we have obtained 10.7 g of adamantium nitrate from Wolverine's 10 pound claws. So the actual value or the experimental value is the amount of adamantium nitrate obtained from Wolverine's claws.

Thus, the experimental outcome is 10.7 g. While we had expected to recover 15 g of adamantium nitrate. So the theoretical outcome is 15 g.

Percent yield = \frac{10.7}{15} * 100 = 71.3 %

Thus, the percent yield is 71.3 %.

7 0
2 years ago
When 20 grams of KCIO3, is dissolved in 100 grams of water, the solution can be
tia_tia [17]

Answer:

b. unsaturated .

Explanation:

Hello there!

In this case, according to the given information, it turns out necessary for us to bear to mind the definition of each type of solution:

- Supersaturated solution: comprises a large amount of solute at a temperature at which it will be able to crystalize upon standing.

- Unsaturated solution: is a solution in which a solvent is able to dissolve any more solute at a given temperature.

- Saturated solution can be defined as a solution in which a solvent is not capable of dissolving any more solute at a given temperature.

In such a way, since 20 grams of the solute are less than the solubility, we infer this is b. unsaturated, as 33.3 grams of solute can be further added to the 100 grams of water.

Regards!

6 0
2 years ago
Can someone give me a answer on why should renewable resources be used wisely?
irina [24]

We should use renewable resources wisely because <u>if we over use them the resources we already have will decline.</u>

5 0
2 years ago
Read 2 more answers
Other questions:
  • when 200. milliliters of an HNO3 solution is exactly neutralized by 250 milliliters of a 0.50 M solution of KOH, what is the con
    12·1 answer
  • How many grams are equivalent to 1.80 x 10^-4 tons? (English tons)
    11·1 answer
  • The enthalpy of reaction for the decomposition of ammonium nitrate, NH4NO3 is -77.4 kJ mol^-1. Calculate the heat evolved when 7
    12·1 answer
  • A solution was prepared by dissolving 31.0 g of kcl in 225 g of water. part a calculate the mass percent of kcl in the solution.
    11·1 answer
  • The pyruvic acid from glycolysis can be converted to acetic acid, which can enter the citric acid cycle. Because this process is
    5·1 answer
  • Which of these scenarios involve a reaction that is at equilibrium?
    7·2 answers
  • How many atoms are in the mole of magnesium
    9·1 answer
  • How many carbons atoms are in propane?
    8·2 answers
  • Determine the oxidation number of chlorine in CI2 with the steps
    5·1 answer
  • How does the concentration of ions in a strong acid differ from a weak acid?
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!