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4 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]4 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

How many atoms of chlorine are there in 16.5 g of iron (iii) chloride?

MrRa [10]

Fecl3 has a RFM of 56 + (35.5 * 3) = 162.5

so find out its moles 16.5 ÷ 162 5 = aprox. 0.1M

then there is a 1 : 3 ratio so 0.1 * 3 = 0.3

then times that by the avogado constant which is 6.02×10^23

0.3 × 6.02×10^23 = ans

hope that helps

7 0

4 years ago

Use the periodic table to identify the element indicated by each electron configuration by typing in the

EleoNora [17]

Answer:

1s22s22p6: Neon (Ne)

1s22s22p63s23p3: Phosphorous (P)

1s22s22p63s23p64s1: Potassium (K)

1s22s22p63s23p64s2(im not sure what 308 is supposed to be): Calcium (Ca)

1s22s22p63s23p64s23d104p65s24d3: there is no pure element that ends 4d3 that I know of so this can either be Zirconium(Zr) if it ends in 4d2 or Niobium (Nb) if it ends in 4d4

Explanation:

you can look at the periodic table and the trends to find the rough idea of where the electron configuration ends, there are helpful articles and images on these, i attached an image that may help. After that you can look at the atomic number to find the number of electrons for a pure element and use the electron subshell pattern thing to find the exact number

5 0

2 years ago

What 2 things do the planets need to have in order to stay in orbit and rotate?

Degger [83]

Two things plants need to have in order to stay in orbit and rotate is speed and less velocity.

5 0

3 years ago

Which of these is a carbohydrate?

Paladinen [302]

Answer:

C6H12O6

Glucose

Explanation:

Glucose is a monocarbohydrate

carbohydrates always have only C, H, and O

brainliest plz

6 0

3 years ago

A student estimated the volume of a liquid in a beaker as 200.0 mL. When she poured the liquid into a graduated cylinder she MEA

Taya2010 [7]

Answer:

<h3>The answer is 0.91 %</h3>

Explanation:

The percentage error of a certain measurement can be found by using the formula

$P(\%) = \frac{error}{actual \: \: number} \times 100\% \\$

From the question

actual volume = 198.2 mL

error = 200 - 198.2 = 1.8

So we have

$P(\%) = \frac{1.8}{198.2} \times 100 \\ = 0.90817356205...$

We have the final answer as

Hope this helps you

6 0

3 years ago