All categories

3 years ago

Which two properties of an object are directly related to its thermal energy?

Chemistry

2 answers:

Tanzania [10]3 years ago

5 0

Answer: mass and temperature

natka813 [3]3 years ago

3 0

Answer:

mass and temperature

Explanation:

You might be interested in

A student receives 83.2 points, 44.6 points, 74.4 points, and 52.3 points on each of four tests. Determine the student’s test av

Leya [2.2K]

Answer:

Average = 63.6

Explanation:

Average : The average of the given set of points can be calculated by dividing sum of the total point to the number of points.

$Average =\frac{Sum\ of\ points}{Number\ of\ points}$

The points that are given in this equation are:

83.2 , 44.6 , 74.4 , 52.3 .

These are 4 in number . So average is

$Average =\frac{Sum\ of\ points}{Number\ of\ points}$

$Average =\frac{83.2+44.6+74.4+52.3}{4}$

$Average =\frac{254.5}{4}$

$Average =63.625$

Significant digits : It is the number of digits that carry meaningful value to a measurement. The rules for counting number of significant digits are:

1. all non-zero digit are significant

2.Any zero between two non-zero are also significant.(305 = 3 significant digit )

3. Zero before the decimal are non-significant (0.003 = only 1 significant digit)

Zero after decimal are significant (3.00 has 3 significant digit)

4.Zero after non - zero digit is non significant (300 has 1 significant digit).

Significant digits in division :

The answer should have the significant digits that are least in any of number(83.2 , 44.6 , 74.4 , 52.3 )

All have = 3 significant digits.

So least numner of significant digit =3

Answer should have total = 3 significant digits

So,

Average = 63.6

3 0

3 years ago

Who made the periodic table?

swat32

Nobody specifically made the periodic table but it was first thought of by Dmitri Mendeleev in 1869.

7 0

3 years ago

Read 2 more answers

Diagram of the outermost shell of fluorine atom?

Rufina [12.5K]

Orbital diagram:

$\text{Energy}\left \uparrow \begin{array}{ccccc}2p & &\uparrow\downarrow&\uparrow\downarrow&\uparrow\\2s&\uparrow\downarrow\end{array}\right.$

<h3>Explanation</h3>

Fluorine F is found in the second column from the right end of a modern periodic table. Fluorine is next to and on the left of the noble gas element neon. A neutral fluorine atom is one electron short of neon, which contains 8 electrons in the outermost shell when neutral. As a result, there are 7 electrons in the outermost shell of a fluorine atom.

Fluorine is in period 2. Its electrons occupy two main shells. The second main shell is the outermost shell of F. There are two subshells in the second main shell:

2s, which holds up to two electrons, and
2p, which holds up to six electrons.

A 2s electron carries less energy than a 2p electron. By Aufbau principle, the seven electrons will fill the two spaces in 2s before moving on the 2p. Among the 7 outermost shell electrons, $7 - 2 = 5$ will end up going to 2p.

The only 2s orbital is filled with two electrons. The two 2s electrons will pair up with opposite spins, as seen with the two arrows. Two of the 2p orbitals will contain two electrons. Those electrons will also pair up. The third 2p orbital will contain only one electron. That electron can spin either $\uparrow$ or $\downarrow$ . Here that electron is shown as an upward arrow.