What is the formula for copper(II) sulfide ? What is the formula for Iron (II) b

Question

What is the formula for copper(II) sulfide ? What is the formula for Iron (II) bromide ? What is formula for Iron (III) fluoride ? What is the formula Nil_2 ? What is the name of the compound with the formula CoBr_3 ? What is the name of the compound with the formula coO ? What is the name of the compound with the formula NaNO_3 ? What is the name of the compound with the formula CaCrO_4 ? What is the name of the compound with the formula K_2SO_4 ? What is the formula for aluminum sulfate ? What is the formula for sodium chromate ? What is the formula for calcium phosphate ? How many moles of Br are there in a sample of Br that contains 3.15 times 10^24 atoms ? How many Ba atoms are there in 4.39 moles of Ba ?

Explanation / Answer

Cu+2 and S-2

then

CuS

Iron+2 and Br-

then

FeBr2

Iron+3 and Fluoride --> F-

then

FeF3

NiI2 --> Nickel (II) Iodide

CoBr3 --->Cobalt (III) Bromide

CoO --> Cobalt (I) Oxide

FOR

NaNO3 ---> Na+ is sodium and NO3- is nitrate so

Sodium Nitrate

CaCrO4 --> Ca+2 is calcium and CrO4-2 is chromate

then

Calcium Chromate

K2SO4 --> 2K+ is postassium and SO4-2 is sulfate so

Potasium Chromate

Aluminium Sulfate -> Al2(SO4)3

Sodim chromate --> Na2(CrO4)

for

calcium phosphate -> Ca3(PO4)2

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