Seudónimo Seudónimo

29-01-2021
Chemistry

contestada

HELP PLEASE ANSWER PLEASE ITS URGENT!!

-unnecessary comments will be reported.

HELP PLEASE ANSWER PLEASE ITS URGENT unnecessary comments will be reported class=

Respuesta :

dakotalee0319 dakotalee0319

29-01-2021

Answer:

19. 1, 2, 3, 4, 5, 6, 7, 8

20. Li=1+, Be=2+, B=3+, C=4+

21. N=3-, O=2-, F=1-

Explanation:

Answer Link

Otras preguntas

Kate wants to install an in ground pool in five years. She estimates the cost will be $50,000. How much should she deposit monthly into an account that pays 1.

hOW MANY people served in WW2

The solution to an inequality is given in set-builder notation as {x l x > two-thirds}. what is another way to represent this solution set? a. (–[infinity]

in the problem to the left if Tim mows 9 lawns this week, by how much will he have exceeded his goal ( Tim earns 120 plus 30 for each lawn he mows. ) PLEASE H

Please select the word from the list that best fits the definition the idea that a country gains power by building up a supply of gold and silver

Lead (atomic radiu = 0. 181 nm) crytallize with a face-centered cubic unit cell. What i the length of a ide of the cell?

The constant use of variety is enough to sustain a listener's interest and make a music piece pleasing and memorable.t/f

Every month, noah takes home around $2,000. He uses $1,000 to cover his share of rent, utilities, transportation, and groceries. He uses around $650 on entertai

What are some possible uses for technology that can identify people based on their dna?.

What is a homologous structure? A. a structure that is ancient B. a structure among organisms that develop from the same tissue but have different mature forms