All categories

3 years ago

Who was the second person to organize the elements on the periodic table and what property did he use to re-organize them?

Chemistry

1 answer:

makkiz [27]3 years ago

8 0

Answer:

Dmitri Mendeleev

Explanation:

He was a Russian Scientist who decided to reorganize the periodic table after other notable scientists such as Antoine-Laurent Lavoisier had also tried to organize it based on the states of matter of the elements.

Mendeleev reorganized the period in the order of increasing atomic mass although there were some other modifications by modern scientists.

You might be interested in

When taphonomy records show a short PMI and warm, humid conditions, the degree of certainty is probably _____.

puteri [66]

The degree of certainty is high.

7 0

4 years ago

Read 2 more answers

Under the right conditions aluminum will react with chlorine to produce aluminum chloride.

salantis [7]

Answer:

$m_{Al}=9.42gAl$

Explanation:

Hello there!

In this case, according to the given chemical reaction:

2 Al + 3 Cl2 --> 2 AlCl3

Whereas there is a 2:3 mole ratio of aluminum to chlorine; it will be possible for us to calculate the required grams of aluminum by using the equality 22.4 L = 1 mol, the aforementioned mole ratio and the atomic mass of aluminum (27.0 g/mol) to obtain:

$m_{Al}=11.727LCl_2*\frac{1molCl_2}{22.4LCl_2}*\frac{2molAl}{3molCl_2} *\frac{27.0gAl}{1molAl} \\\\m_{Al}=9.42gAl$

Regards!

8 0

3 years ago

Is this molecule polar? NaS

Anuta_ua [19.1K]

Answer:

NaS is ionic compounds that's why it is polar.

Explanation:

Ionic bond:

It is the bond which is formed by the transfer of electron from one atom to the atom of another element.

Both bonded atoms have very large electronegativity difference. The atom with large electronegativity value accept the electron from other with smaller value of electronegativity.

For example:

Sodium sulfide is ionic compound. The electronegativity of sulfur is 2.58 and for sodium is 0.93. There is large difference is present. That's why electron from sodium is transfer to the sulfur. Sodium becomes positive and sulfur becomes negative ion. There are electrostatic fores present between bonded atoms and molecule becomes polar.

8 0

4 years ago

A student collects 1.00 L of a gaseous hydrocarbon at 27 °C and 101 kPa. The mass of the sample is 1.79 g. The hydrocarbon has t

Zinaida [17]

A.ch4 ;D ;D;D;D;D;D;D;D;D;D;D;D;D;D

5 0

3 years ago

1 L, 1000 mL, and 1000 cm are considered to be<br><br> EQUIVALENT or NON EQUIVALENT UNITS.

antoniya [11.8K]

Answer:

equivalent

Explanation:

hope it works

7 0

2 years ago