A. Karimov, X. Xoshimov Umumiy kimyodan Masalalar va testlar to`plami Akademik litsey va kasb-hunar kollejlari uchun o`quv qo`llanma so`z boshi

Ba`zi elementlarning yahlitlangan atom massalari

Elementning	Kimyoviy	Atom	Elementning	Kimyoviy	Atom
nomi	belgisi	massasi	nomi	belgisi	massasi
Azot ...	N	14	Marganеts…	Мn	55
Alyuminiy …	А1	27	Mishyak…	As	75
Argon ...	Аr	40	Mis…	Сu	64
Bariy…	Ва	137	Molibdеn..	Мо	96
Bеrilliy…	Be	9	Natriy …	Na	23
Bor ....	В	11	Nеon ...	Ne	20
Brom …	Вr	80	Nikеl…	Ni	59
Vanadiy…	V	51	Niobiy …	Nb	93
Vismut...	Вi	209	Kalay…	Sn	116
Vodorod …	Н	1	Osmiy …	Os	190
Volfram…	W	184	Palladiy…	Pd	106
Uglеrod…	С	12	Platina….	Pt	195
Galliy…	Gа	70	Родий …	Rh	103
Gafniy ...	Hf	178	Simob…	Hg	201
Gеliy...	Не	4	Rubidiy…	Rb	85
Gеrmaniy…	Gе	73	Rutеniy…	Ru	101
Tеmir...	Fe	56	Qo`rg`oshin..	Pb	207
Oltin...	Au	197	Sеlеn…	Se	79
Indiy...	In	115	Oltingugurt	S	32
Iridiy ...	Ir	192	Kumush…	Ag	108
Ittriy…	Y	89	Surma…	Sb	122
Yod. . .	J	127	Strontsiy…	Sr	88
Kadmiy...	Cd	112	Talliy …	TI	204
Kaliy ...	К	£9	Tantal …	Та	180
Kaltsiy...	Ca	40	Tеllur …	Те	128
Kislorod…	O	16	Fosfor …	P	81
Kobalt ...	Co	69	Ftor…	F	19
Krеmniy ...	Si	28	Xlor …	CI	85,5
Kripton ...	Kr	84	Xrom …	Cr	62
Ksеnon ...	Xe	. 131	Sеziy…	Cs	133
Lantan ...	La	189	Rux ....	Zn	65
Magniy...	Mg	24

2. 
   jadval Kislota va ishqorlar eritmalarining 18°С temperaturadagi prosent konsentrasiyasi va zichligi
   

%	H2SO4	HNO3	НСl	КОН	NaOH	NH3
4	1,027	1,022	1,019	1,033	1,046	0,983
6	1,040	1,033	1,029	1,048	1,069	0,973
8	1,055	1,044	1,039	1,065	1,092	0,967
10	1,069	1,056	1,049	1,082	1,115	0,960
12	1,083	1,068	1,059	1,100	1,137	0,958
14	1,098	1,080	1,069	1,118	1,159	0,946
16	1,112	1,093	1,079	1,137	1,181	0,939
18	1,127	1,106	1,089	1,156	1,203	0,932
20	1,143	1,119	1,100	1,176	1,225	0,926
22	1,158	1,132	1,110	1,196	1,247	0,919
24	1,174	1,145	1,121	1,217	1,268	0,913
26	1,190	1,158	1,132	1,240	1,289	0,908
28	1,205	1,171	1,142	1,263	1,310	0,903
30	1,224	1,184	1,152	1,286	1,332	0,898
32	1,238	1,198	1,163	1,310	1,352	0,893
34	1,255	1,211	1,173	1,334	1,374	0,889
36	1,273	1,225	1,183	1,358	1,395	0,884
38	1,290	1,238	1,194	1,384	1,416	__
40	1,307	1,251	—	1,411	1,437	__
42	1,324	1,264	—	1,437	1,458	__
44	1,342	1,277	—	1,460	1,478	__
46	1,361	1,290	—	1,485	1,499	__
48	1,380	1,303	—	1,511	1,519	__
50	1,399	1,316	—	1,538	1,540	__
52	1,419'	1,328	—	1,564	1,560	—
54	1,439	1,340	—	1,590	1,580	__
56	1,460	1,351	—	1,616	1,601	__
58	1,482	1,362	—	—	1,622	__
60	1,503	1,373	—	—	1,643	__
62	1.525	1,384	—	__	__	__
64	1,547	1,394	—	__	__	__
66	1,571	1,403	—	—	__	__
6S	1,594	1,412	—	__	__	__
70	1,617	1,421	—	—	__	__
72	1,640	1,429	—	__	__	__
74	1,664	1,437	—	__	__	__
76	1,687	1,445	—	__	__	__
78	1,710	1,453	—	__	__	__
80	1,732	1,460	—	__	__	__
82	1,755	1,467	—	__	__	__
84	1,776	1,474	—	—	__	__
86	1,793	1,480	—	__	__	__
88	1,808	1,486	—	__	__	__
90	1,819	1,491	—	__	—	__
92	1,830	1,496	—	__	__	__
94	1,837	1,500	—	__	__	__
96	1,840	1,504	—	__	__	__
98	1,841	1,510	—	__	__	__
100	1,838	1,522	—	—	—	—

2.