Heat is thermal energy transferred from one object to another because of a difference in

Chemistry

1 answer:

DedPeter [7]3 years ago

4 0

Due to "<u>Temperature</u>" difference heat is transferred from "one object" to "another object".

<u>Explanation</u>:

In general there are three ways for heat to be transferred: Conduction (heat is transferred by vibration of particles), Convection (heat is transferred by movement of particles) & Radiation (heat is transferred in Infrared waves). Heat is also called as thermal energy which acts as kinetic energy when energy is given to atoms, molecules, ions in solids, liquids and gases due to which movement takes place. As heat flows from higher temperature to lower temperature and heat content “Q” of an object depend upon its specific heat “c” and its mass “m”. For example when ice cube is added to room temperature water then transfer of heat energy will take place due to which ice melts in water and both of them reach to a common temperature which is also called as “Thermal Equilibrium” phase.

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Divide the numbers in around the answer to the correct number of significant figures.

Zina [86]

Answer:

$\large \boxed{19.0}$

Explanation:

In multiplication and division problems, the answer can have no more significant figures than the number with the fewest significant figures.

A calculator gives the result:

$\dfrac{163.8}{8.64} = \mathbf{18.95833333}$

163.8 has four significant figures.

8.64 has three significant figures.

You must round to three significant figures.

That is, you drop all the digits to the right of the 9 — the red line in Fig. 1 below. You are rounding to the nearest tenth.

To round a number to the nearest tenth, you look at the digit in the hundredths place (7). See Fig. 2.

If the digit to be dropped is greater than 5 or is 5 followed by at least one non-zero digit, you add 1 to the number in the tenths place (Fig. 3).

Here's how you do it.