Nomenclature
Write the chemical formula for
iron(lll) acetate
silver nitrate
mercury(l) bromide
chromium (lll) phosphite
Fe(C2H3O2)3
AgNO3
Hg2Br2
CrPO3
A sample of an organic compound contains carbon, hydrogen, and nitrogen. It was analyzed and found to contain 40.00% carbon, 6.67% hydrogen. Calculate the empirical formula of the compound.
CH₂N
Balance this equation
C4H10S + O2 ----> CO2 + H2O +SO2
2C₄H₁₀S+15O₂→8CO₂+10H₂O+2SO₂
Calculate the mass percent of each element in sodium chloride. If the Heart Health association recommends that a male adult should consume 1.5mg of sodium a day to prevent heart disease, how much sodium chloride contains the recommended amount of sodium.
39.34% sodium
60.66% chloride
3.81E-3g of NaCl
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Name
Cu(SO4)
Cr(PO2)
As₂O₃
S₆F₉
copper(ll) sulfate
chromium(lll) hypophosphite
arsenic trioxide
hexasulfur nonafluoride
A compound contains only C,H, and oxygen. Combustion of 10.68mg of the compound yields 16.01mg CO2 and 4.37mg of H2O. The molecular weight of the compound is 176.1g/mol. What is the molecular formula?
C6H8O6
Hydrochloric acid is produced when gaseous hydrogen chloride reacts with liquid water to form an aqueous solution of hydrochloric acid.
HCl (g)+H₂O (l)→HCl (aq)
Using the chemical equation
3Na₂SO₄+2Fe(NO₃)₃→6NaNO₃+Fe₂(SO₄)₃
A. How many moles of Fe(NO₃)₃ would be required to react with 1.5mol of Na₂SO₄?
B. What weight of NaNO₃ will be produced from 5g of Na₂SO₄
C. When 25g of Fe(NO₃)₃ is combined with excess Na₂SO₄, 18.2g of Fe₂(SO₄)₃ is produced. What is the % yield?
A. 1.0 mole of Fe(NO₃)₃ is required to react with 1.5 moles of Na₂SO₄.
B. 5.98 g of NaNO₃ will be produced from 5 g of Na₂SO₄.
C. The percentage yield of Fe₂(SO₄)₃ is 88.06%
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Write chemical formula for
potassium superoxide
mercury(ll) chloride
chlorous acid
manganese hypochlorite
KO2
HgCl2
HClO2 (aq)
Mn(ClO)2
A compound contains Al and Hydrogen. It is determined that it contains 76.14% Aluminum. What is the empirical formula?
If the molecular mass is 70g/mol what is the molecular formula?
The empirical formula of the compound is AlH₈
Molecular formula = Al2H16
Write a balanced equation for the combustion of C2NO3
2C₂NO₃+7O₂→4CO₂+2NO₂+2H₂O
4KMnO4 + 32HI ----> 10I2 + 4KI + 4MnI2 +16H2O
A. To produce 25g of MnI2, what mass of each KMnO4 and HI are needed?
B. How many grams of water will be produced when 32.5g of KMnO4 is reacted with 75.5g of HI?
C. When the reaction in part B is complete, how many grams of the reagent in excess will be left?
A. 12.80 g of KMnO₄ is needed.
82.85 g of HI is needed.
B. 5.32 g of water (H₂O) will be produced.
C. 20.84 g of HI will be left in excess.
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Write the chemical formulas for
hydrosulfuric acid
phosphoric acid
acetic acid
trisulfur monoxide
H2S (aq)
H3PO4 (aq)
HC2H3O2 (aq)
S₃O
When 28 g of calcium carbonate was reacted with 45 g of hydrochloric acid, 12.5 g of calcium chloride was produced along with water and carbon dioxide gas. Calculate the percent yield of calcium chloride.
CaCO₃+2HCl→CaCl₂+H₂O+CO₂
Percent yield=(31.07g/12.5g)×100=40.2%
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Write the formulas for the following compounds
heptanitrogen hexachloride
diarsenic triboride
pentaselenium octaisulfide
trichlorine monoxide
N7Cl6
As2B3
Se₅S8
Cl₃O
The density of a saline solution is 1.05 g/mL. The saline solution you purchased contains 3.00% by mass of sodium chloride. Calculate the molarity of sodium chloride in the solution.
Assume 100g ---> 5g NaCl
3g --->0.05133 mol
100g/ 1.05g/1000 = 0.0952L
0.539M NaCl
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