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3 years ago

Which of the following is an alkali metal?

Chemistry

2 answers:

Veronika [31]3 years ago

7 0

Answer:

lithium is akali metal

Afina-wow [57]3 years ago

3 0

Answer:

lithium is an alkali metal as it lies in group 1st in modern perodic table.

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1. Oxygen full electron configuration

Arada [10]

Answer:

$1s^{2} 2s^{2} 2p^{4}$

Explanation:

Oxygen has eight eletrons and six valence electrons, giving it the electron configuration of $1s^{2} 2s^{2} 2p^{4}$ .

7 0

3 years ago

I NEED HELP ASAP !

Lana71 [14]

Answer:

643.21g 1 mol 6.022^23

262.87 g 1 mol

= 1.4735E24 [Mg3(PO4)2]

4.061x10^24 1mol 22.4 (L)

6.022^23 1mol

= 151 liters H2O2

479.3g 1 mol 6.022^23

18.02g 1mol

= 1.60E25 H20 atoms

80.34L 1mol 164.1

22.4L 1mol

588.6g Ca(NO3)2

893.7g 1mol 22.4

44.01g 1mol

= 427 L CO2 or 427.4

5.39 x 10^25 1mol 78.01

6.022^23 1mol

= 6980g Al(OH)3

hope this helps!! :)

8 0

3 years ago

For c2h3o2−, write an equation that shows how the anion acts as a base.

velikii [3]

The synthetic compound Zn(C2H3O2)2 is zinc acetic acid derivation. The molecular composition demonstrates that the mixes incorporate zinc, spoke to by Zn; carbon, spoke to by C; hydrogen, spoke to by H; and oxygen, spoke to by O. Below is the an equation that shows how the anion acts as a base:

C2H3O2−(aq)+H2O(l)⇌HC2H3O2(aq)+OH−(aq)

4 0

3 years ago

Read 2 more answers

In a compound, such as CH3OH, how determine which is the central atom?

svetlana [45]

Answer:

Choose the least electronegative atom other than H.

Explanation:

A Lewis structure consists of terminal atoms and one or more central atoms.

H can be only a terminal atom because it can form only one bond.

So the central atom must be either C or O.