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
lyudmila [28]
3 years ago
14

Which best describes the heat that you can feel on the engine of a running car?

Chemistry
2 answers:
IgorC [24]3 years ago
8 0
The heat is unusable  and  is being lost  to the surrounding -- assuming that the engine has reached operating temperature   and is not increasing or decreasing in temperature. 
butalik [34]3 years ago
7 0

Answer is: The heat is unusable and lost to the surroundings.

Gasoline is a mixture  of many different hydrocarbons: alkanes (paraffins), cycloalkanes  and alkenes (olefins).

Balanced chemical reaction of gasoline combustion:

C₈H₁₈ + 25/2O₂ → 8CO₂ + 9H₂O + energy.

One part of energy produced in combustion of gasoline is used for car ungine (kinetic energy) and other part of that energy (in form of heat) is lost to the surronding and engine does not use it.

You might be interested in
Why do all atoms of an element have the same atomic number, although they may have different mass numbers?. What do we call atom
3241004551 [841]
The isotopes of an element differ in the number or neutrons whereas the number of protons or electrons of a neutral atom stays the same. The molar mass of the element is based on the percent abundances of different isotopes and the individual molar mass of each isotope. 
7 0
3 years ago
Write the Henderson-Hasselbalch equation for a solution of formic acid. Calculate the quotient [HCO2]/[HCO2H] at (a) pH 3.000; (
Elena L [17]

Answer:

a. 0.182

b. 1.009

c. 1.819

Explanation:

Henderson-Hasselbach equation is:

pH = pKa + log [salt / acid]

Let's replace the formula by the given values.

a. 3 = 3.74 + log [salt / acid]

3 - 3.74 = log [salt / acid]

-0.74 = log [salt / acid]

10⁻⁰'⁷⁴ = 0.182

b. 3.744 = 3.74 + log [salt / acid]

3.744 - 3.74 = log [salt / acid]

0.004 = log [salt / acid]

10⁰'⁰⁰⁴ = 1.009

c. 4 = 3.74 + log [salt / acid]

4 - 3.74 = log [salt / acid]

0.26 = log [salt / acid]

10⁰'²⁶ = 1.819

3 0
3 years ago
Temperature is a(n)<br> ecosystem.<br> component of an ecosystem.
guajiro [1.7K]

Answer:

Temperature is an abiotic component of an ecosystem

Explanation:

6 0
2 years ago
A low-pressure weather system comes into the city of Denver. The atmospheric pressure is 693 mmHg.693 mmHg. If 78.0%78.0% of dry
scoundrel [369]

Answer:

540.54 mmHg

Explanation:

We know that the partial pressure of a substance is defined as; Mole fraction * total pressure.

If the total amount of gases in the atmosphere is 100%, the mole fraction of nitrogen gas is now

78/100 = 0.78

Thus, partial pressure of nitrogen gas = 0.78 * 693 = 540.54 mmHg

6 0
2 years ago
Aquatic organisms that lived hundreds of millions of years ago and were buried in silt and sediment resulted in the formation of
ololo11 [35]
The formation of Fossil Fuels.

The fossil fuels such as oil originate mostly from aquatic organism and are extracted on oil rigs located in oceans and seas. Most of the oil is procured this way.
3 0
3 years ago
Other questions:
  • In a study of the conversion of methane to other fuels, a chemical engineer mixes gaseous CH4 and H2O in a 0.32-L flask at 1200
    15·1 answer
  • What is the chief chemical property of ethers?
    10·1 answer
  • Which subatomic particle is responsible for chemical properties of atoms?
    15·1 answer
  • 1. Al+3 has how many neutrons?<br><br>2. thorium-230 has how many protons, neutrons and electrons?
    13·1 answer
  • A screw is made up of
    14·1 answer
  • You have 0.672 L of 4.78 M aqueous AlCl3 solution in a glass. If you gently heat the solution until only 0.380 L is left, what i
    15·1 answer
  • Which are characteristics of natural selection? Select three options.
    8·1 answer
  • What is the periodic table element for Iron?
    6·2 answers
  • ¿Cómo puedes conocer tu condición física?
    10·1 answer
  • How can you get parents to accept a long distance relationship?
    10·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!