Quiz review for Obj. F

question

carbon dioxide
answer

CO2

question

CuS
answer

copper II sulfide
question

magnesium nitride

answer

Mg3N2
question

SrCl2

answer

strontium chloride
question

P2O5

answer

diphosphorus pentaoxide
question

BeI2

answer

beryllium iodide
question

chromium IV sulfide
answer

CrS2

question

SO2

answer

sulfur dioxide
question

NaBr
answer

sodium bromide
question

AsCl3

answer

arsenic trichloride
question

Ni2O3

answer

nickel III oxide
question

HgO
answer

mercury II oxide
question

CaCl2

answer

calcium chloride
question

BaS
answer

barium sulfide
question

cadmium IV chloride

answer

CdCl4
question

MnO2

answer

manganese IV oxide
question

Sb2O3

answer

antimony oxide
question

SeCl2

answer

selenium dichloride
question

CoCl2

answer

cobalt II chloride
question

molybdenium III sulfide
answer

Mo2S3

question

Ca3P2

answer

calcium phosphide
question

AlP
answer

aluminum phosphide
question

NO2

answer

nitrogen dioxide
question

K2O

answer

potassium oxide
question

copper I oxide
answer

Cu2O
question

Iron III oxide
answer

Fe2O3
question

ZnS
answer

zinc II sulfide
question

NiI3

answer

nickel III iodide
question

carbon disulfide
answer

CS2
question

sulfur trioxide
answer

SO3
question

KCl
answer

potassium chloride
question

tungsten I carbide
answer

W4C

question

SiO2

answer

silicon dioxide
question

CrO2
answer

chromium IV oxide

question

potassium sulfide
answer

K2S
question

lithium sulfide
answer

Li2S
question

CdO
answer

cadmium II oxide
question

MgO
answer

magnesium oxide
question

barium fluoride
answer

BaF2

question

gallium arsenide
answer

GaAs
question

Hg2S

answer

mercury I sulfide
question

diphosphorus pentoxide
answer

P2O5
question

aluminum bromide
answer

AlBr3
question

diboron trioxide

answer

B2O3

question

CrSe
answer

Chromium II selenide
question

NiN
answer

nickel III nitride
question

Al2O3

answer

aluminum oxide
question

When non-metals combine with non-metals, both elements in the binary compound are trying to _____ electrons.
answer

GAIN
question

Whenever Iron forms a compound with a non-metal, a ________ must appear in the name to indicate the valence of Iron.
answer

ROMAN NUMERAL
question

Which family in the periodic table does not form binary compounds?
answer

GROUP 8A

(the Nobel or Inert Gases)

question

Metals will never form bonds with metals because both atoms are trying to _____ electrons.
answer

LOSE
question

An atom that always forms a +3 ion would most likely be in which family?
answer

Group 3A

question

An atom which forms a -3 ion would most likely be in which family?
answer

group 5A

 (the Nitrogen family)

question

When combined with the element sulfur, which one of the following elements would most likely come first in the formula? Br F Si O
answer

Si (because it is further to the left in the periodic table – more metallic – and would tend to lose electrons to the sulfur to become the (+) cation.
question

ALL binary compounds end in the suffix _____.
answer

"ide"
question

Which of the following elements would most likely form an anion? Fe Cl Ga Cs Mg
answer

Cl (it’s the only non-metal in the list;and would most likely gain electrons because it would;have the highest electronegativity value)
question

CuBr
answer

copper I bromide
question

vanadium I sulfide

answer

V2S

question

diphosphorus trisulfide
answer

P2S3

question

MoS2

answer

Molybdinum IV sulfide

question

Calculate the % of oxygen in the compound, dinitrogen tetraoxide.
answer

dinitrogen tetraoxide = N2O4; (F.W. = 92)
64/92 X 100 = 69.6% oxygen

question

Calculate the % of nitrogen in nitrogen triiodide.
answer

nitrogen;triiodide = NI3; (F.W. = 394.7)
14/394.7 X 100 = 3.5 % nitrogen

question

A compound is found to contain 70.0 % Iron and 30.0 % oxygen.; Determine the empirical formula from the above information and name the compound.

answer

Fe2O3

Iron III oxide

;

Step 1:; divide the percent by the element;F.W. from the periodic table

Step 2:; divide the largest by the smallest numbers from the above step to get the empirical formula.

question

How many grams are in 2.75 moles of Molybdinum sulfide?
answer

One mole of MoS2 is equal to the formula weight of 160.2 grams.

2.75 mole x 160.2 grams; =; 441 grams
;;;;;;;;;;;;;;;;;;;;;1 mole

question

How many grams are needed to have one mole of phosphorus trichloride?; (answer to 1 decimal place).
answer

PCl3

137.5 grams

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