What is the pH of a 0.85 M solution of N(CH3)3?

Tpy6a [65]

Answer:

A. manganese change from +7 to +2

Explanation:

Reduction means a gain of electrons, which means the oxidation number will go down or the charge goes down basically or become more negative charge. On the left, Mn has +7 in MnO4-. On the right, it has 2+, so it has been reduced.

6 0

3 years ago

‌‌ ‌ ‌ ‌ ‌ ‌ ‌‌ ‌ ‌ ‌‌ What is confidential

Arisa [49]

Answer:

confidential means something that is private, or secured. when something is confidential it means it is just between you and another person, no in between. :)

Explanation:

to use confidential in a sentence - the bank account password is confidential.

8 0

3 years ago

The Lithium atom has only two energy levels. The third is empty. Therefore, we can refer to the second energy level of the lithi

Minchanka [31]

Answer:

H=1

Li=1

Na=1

Be=2

Mg=2

B=3

Al=3

C=4

Si=4

N=5

P=5

O=6

S=6

F=7

Cl=7

Ne=8

Ar=8

He=8

Explanation:

5 0

3 years ago

In a molecule of calcium sulfide, calcium has two valence electron bonds, and a sulfur atom has six valence electrons. How many

mote1985 [20]

There are none

<h3>Further explanation</h3>

Given

a molecule of calcium sulfide

two valence electron of Calcium(Ca)

six valence electrons of Sulfur(S)

Required

number of lone pairs of electrons

Solution

Lewis structure shows the form of bonds that occur in the valence electrons of an element or compound

Valence electrons are electrons used in a chemical bond

To achieve stability, the element S needs 2 more electrons which are obtained from 2 electrons from the Ca element,

A lone pair electron means refers to an unshared pair of electrons(not bonding to the other atoms)

This condition usually occurs in covalent bonds

As we know, the bond between Ca, which is a group 2 (metal) with Sulfur in group 16, is an ionic bond because it occurs between metal and non-metal ions, so there is no sharing of electrons, but there is a release of electrons from Ca ions to S ions to form an octet. , so all the valence electrons in S are paired

7 0

3 years ago

Why are clay minerals used in pottery making or the characteristics that made them use in it I will Will make u brainiest

swat32

Clay is used in pottery for its ability to be manipulated by the bare hands of humans, and it dries very quickly. Since you dont need a lot of equipment, it was a high paying job back in the old times. An advantage of clay that it can keep the water cool for a long time as long as you cover the container.

Another advantage is that clay doesnt react with the liquids or food inside when heat is applied ( Unlike plastic)

8 0

3 years ago