Using this key, pick which category best describes the following chemicals
A Contains a a polyatomic ion b. binary compound, but not covalent c covalent d hydrate
then give a formula for names and names for formulas
Magnesium chloride
Sodium sulfate
HCl
FeO
NaOH
Carbon dioxide
MgSO4 * 7H2O
H2SO4
CO
Iron III chloride
Aluminum carbonate
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give the formulas for:
nickel II nitrite
sodium nitride
nitrate
sodium nitrate
hydrogen nitrate
Copper II sulfate pentahydrate
nitrogen trioxide
Nickel II oxide
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Some potassium metal is put into a crucible and heated, forming potassium oxide. The following data is collected. Use this data and key for the following:Empty crucible 12.50g
Crucible and metal 14.45g
Crucible and product 15.25g
Mass of metal in grams WORK:
Mass of oxygen in grams WORK:
Mass of product in grams WORK:
Experimental % oxygen WORK:
Actual % oxygen WORK:
% error Work:
Assume this is just like the MgO lab. Write a balanced equation, including states:
In the metal / crucible experiment, it appears matter is__ WHY?
When wood burns it appears matter is __ WHY?
When iron rusts it appears matter is__
According to the laws of nature matter is__
If the above experiment were done in a closed container, we would see that matter is________WHY?
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Formula mass of water in amu
mass of 1 mole of water in g
mass of 1 mole Beryllium in g
mass of 1 mole of Boron in g
moles of water present in 90g of water WORK:
mass of 1/2 mole of water in g WORK:
% H in water and % O in water:WORK:
formula mass of aluminum nitrate
% oxygen in aluminum nitrate
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A hydrate, barium chloride dihydrate, is heated, and the following data is obtained.
Mass of empty dish 34.06g
Mass of dish and hydrate 37.08g.
Mass of dish and chemical after heating 36.85g.
Mass in g of the hydrate WORK:
Mass in g of the anhydrous salt WORK:
Mass in g of the water. WORK:
% water in the hydrate from the experiment WORK:
% water in the hydrate from the formula (actual) Work:
% error Work:
when the hydrate is heated, its mass will
the crystal containing water is called
the powder left after the water is removed is called
we heated the hydrate a second time because
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the charge of a sulfate ion
the charge of a flouride ion
the charge of a calcium ion
the charge of an aluminum ion
the charge of a nitrate ion
The charge of an iron III ion