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
Nostrana [21]
1 year ago
14

What is the change in internal energy (in J) of a system that absorbs 0.615 kJ of heat from its surroundings and has 0.247 kcal

of work done on it?
Chemistry
1 answer:
Radda [10]1 year ago
7 0

The change in internal energy of a system is 1648.45 J.

First we convert calories into joule :-

From question, values are given q = 0.615 kJ

                                                     q  = 615 J

                                                  w = 0.247 kcal

                                                  w = 247 Cal = 247 × 4.184 J

                                                  w = 1033.45 J

Formula of change in internal energy, ΔE = q + w

Here, the system absorbs heat from surroundings, so q is positive

Now, put the values of q and w in the formula,

ΔE = q + w

ΔE = 615 + 1033.45 J

ΔE = 1648.45 J

Internal energy is the sum of ability power of the gadget and the machine's kinetic strength. The alternate in internal energy (ΔU) of a response is equal to the heat gained or lost (enthalpy trade) in a reaction whilst the reaction is administered at steady pressure. Inside the study of thermodynamics, a usually perfect gasoline is taken into consideration as a running substance. The molecules of an ideal gasoline are mere mass points that exert no force on each other.

The SI derived unit used to degree strength or paintings. One joule is identical to the electricity used to accelerate a body with a mass of 1 kilogram using one newton of force over a distance of one meter. One joule is also equal to one watt-second.

Learn more about internal energy here:- brainly.com/question/1370118

#SPJ4

You might be interested in
What is included in a compaarative investigation
Minchanka [31]

a scientific question

6 0
3 years ago
2C3H7OH + 9O2 --> 6CO2 + 8H2O
Ne4ueva [31]
<h3>Answer:</h3>

733 g CO₂

<h3>General Formulas and Concepts:</h3>

<u>Math</u>

<u>Pre-Algebra</u>

Order of Operations: BPEMDAS

  1. Brackets
  2. Parenthesis
  3. Exponents
  4. Multiplication
  5. Division
  6. Addition
  7. Subtraction
  • Left to Right<u> </u>

<u>Chemistry</u>

<u>Atomic Structure</u>

  • Reading a Periodic Table

<u>Stoichiometry</u>

  • Using Dimensional Analysis
<h3>Explanation:</h3>

<u>Step 1: Define</u>

[RxN - Balanced]   2C₃H₇OH + 9O₂ → 6CO₂ + 8H₂O

[Given]   5.55 mol C₃H₇OH

<u>Step 2: Identify Conversions</u>

[RxN] 2 mol C₃H₇OH → 6 CO₂

Molar Mass of C - 12.01 g/mol

Molar Mass of O - 16.00 g/mol

Molar Mass of CO₂ - 12.01 + 2(16.00) = 44.01 g/mol

<u>Step 3: Stoichiometry</u>

  1. Set up conversion:                    \displaystyle 5.55 \ mol \ C_3H_7OH(\frac{6 \ mol \ CO_2}{2 \ mol \ C_3H_7OH})(\frac{44.01 \ g \ CO_2}{1 \ mol \ CO_2})
  2. Multiply/Divide:                                                                                               \displaystyle 732.767 \ g \ CO_2

<u>Step 4: Check</u>

<em>Follow sig fig rules and round. We are given 3 sig figs.</em>

732.767 g CO₂ ≈ 733 g CO₂

8 0
3 years ago
Water only gets evaporated from the ocean. True or false?
krek1111 [17]

Answer:

false

Explanation:

7 0
3 years ago
How many licks does it take to get to the end of a tootsie pop
worty [1.4K]

3 lol i was thinking about that from the ad

4 0
3 years ago
Read 2 more answers
In the diagram, the arrow shows the movement of electric charges through a wire connected to a battery. What causes the electric
trasher [3.6K]
Since I don't have the diagram I'm going off my best estimate and the flow of the positive and negative charged protons and neutrons create a flow of energy when collided through a circuit or in this case the wire
3 0
3 years ago
Read 2 more answers
Other questions:
  • What causes the difference in bond angles in carbon dioxide and water?
    7·2 answers
  • What is the pressure of nitrogen in atmospheres of a sample that is at 745 mmHg?
    14·1 answer
  • What mass of sulfur would have precisely 4.7x10^22 atoms of sulfur?
    9·2 answers
  • Unknown element x has four energy levels, five valence electrons, and is a metalloid. what is elements x?
    10·1 answer
  • Which are properties of an electromagnetic wave
    14·1 answer
  • Assume that the potential energy of the products in a chemical reaction is 60 kilojoules. this reaction would be exothermic if t
    5·1 answer
  • Predict the species that will be oxidized first if the following mixture of molten salts undergoes electrolysis:
    11·1 answer
  • The standard free energy change for a reaction can be calculated using the equation ΔG∘′=−nFΔE∘′ ΔG∘′=−nFΔE∘′ where nn is the nu
    6·1 answer
  • A container with a volume of 893L contains how may moles of air at STP?
    11·1 answer
  • What do these two changes have in common? Shaking up salad dressing. Adding dish soap to water in a sink
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!