англ 100-150

100) Specify carbon acidic gas

• CO₂

• CO

• NO₂

• NO

• PO

101) Specify ortoborate ion

• BO₃^3-

• BO^3-

• HBO^2-

• HB^-

• B^2-

102) Define a degree of oxidation of sulfur in sulfide aluminium

• -2

• +2

• +6

• +4

• -4

103) Specify oxidation degree of hydrogen

• ±1

• +1

• -1

• 2

• 1

104) Specify correct name of the substance Na2HPO4

• Sodium monohydro orthophosphate

• Sodium dihydroorthophosphate

• Sodium dihydro orthophosphite

• Potassium dihydro orthophosphate

105) How many atom mass of carbon?

• 12

• 10

• 15

• 25

• 11

106) Number of protons in atom of nucleus of magnesium is equal to:

• 12

• 24

• 6

• 14

• 11

107) Specify a molecule ammonia

• H₃N

• NH₃

• O₂

• N₂

• HCl

108) How many electron of hydrogen

• 1

• 3

• 1

• 5

• 10

109) Specify the name of the salt - FeOHCO3

• iron (ІІІ) monohydroxocarbonate

• carbonate Fe(ІІ)

• hydrocarbonate Fe

• carbide Fe

• carbonate Fe (ІІІ)