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3 years ago

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

2 answers:

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.

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How is the atomic emission spectrum of an element produced?

Murrr4er [49]

Answer:

Atomic emission spectra are produced when excited electrons return to the ground state. The emitted light of electrons corresponds to energies of the specific electrons.

Explanation:

hope it helps you ✌

4 0

2 years ago

Read 2 more answers

What are the three components of soil texture? <br><br> Hurry please help!

tiny-mole [99]

Answer: sand, silt, and clay.

5 0

2 years ago

True or false: <br> The following equation is balanced properly: 6CO2 + 6H2O → C6H12O6 + O2

d1i1m1o1n [39]

No as oxygen is not balance
In reactants side there is 12 oxygen and in the product side there is 8 oxygen

6 0

2 years ago

All of the following statements concerning voltaic cells are true EXCEPT

MissTica

Answer:

oxidation occurs at the cathode.

Explanation:

In a voltaic cell electrons move from anode to cathode. At the anode, species give up electrons. This is an oxidation reaction depicted by the oxidation half equation. At the cathode, species accept electrons and become reduced. This is depicted by the reduction half equation. In summary; in a Voltaic cell, oxidation occurs at the anode while reduction occurs at the cathode.

3 0

3 years ago

Solve the ideal gas law equation for pressure.

posledela

Answer:

$p=\frac{nRT}{V}$

Explanation:

The ideal gas law equation is an equation that relates some of the quantities that describe a gas: pressure, volume and temperature.

The equation is:

$pV=nRT$

where

p is the pressure of the gas

V is the volume of the gas

n is the number of moles of the gas

R is the gas constant

T is the absolute temperature of the gas (must be expressed in Kelvin)

Here we want to solve the equation isolating p, the pressure of the gas.

We can do that simply by dividing both terms by the volume, V. We find:

$p=\frac{nRT}{V}$

So, we see that:

- The pressure is directly proportional to the temperature of the gas

- The pressure is inversely proportional to the volume of the gas

6 0

3 years ago