| Sections | |||
|---|---|---|---|
| Metal Alloys | 7 mins | 0 completed | Learn |
| Polyatomic Ions | 15 mins | 0 completed | Learn Summary |
| Naming Covalent Compounds | 6 mins | 0 completed | Learn |
| Naming Ionic Compounds | 36 mins | 0 completed | Learn |
| Naming Acids | 14 mins | 0 completed | Learn |
| Empirical Formula | 14 mins | 0 completed | Learn Summary |
| Combustion Analysis | 13 mins | 0 completed | Learn |
| Mass Percent Formula | 17 mins | 0 completed | Learn Summary |
| Balancing Chemical Equations | 8 mins | 0 completed | Learn |
| Functional Groups in Chemistry | 13 mins | 0 completed | Learn |
| Stoichiometry | 61 mins | 0 completed | Learn Summary |
| Additional Practice |
|---|
| Ionic and Covalent Bonds |
| Molecular Models |
| Limiting Reagent |
| Percent Yield |
| Additional Guides |
|---|
| Molecular Formula |
| Balancing Chemical Equations Worksheet |
| Theoretical Yield |
| Limiting Reactant |
Solution: Calculate the percentage of carbon by mass in each of the compounds represented by the following models. (Carbon atoms are black spheres, hydrogen are grey, oxygen are red.)
Problem
Calculate the percentage of carbon by mass in each of the compounds represented by the following models. (Carbon atoms are black spheres, hydrogen are grey, oxygen are red.)
Practice Problems
What is the weight percent, with respect to RbCl, ...
What is the mass percent of hydrogen in LiNH 2?
A...
What percent of the mass of the compound, K2PbO3, ...
Calculate the mass percent composition of sulfur i...
What mass of NaCl is contained in 24.88 g of a 15....
A solution is prepared by dissolving 98.6 g of NaC...
A crystalline sample that has the formula MgCl 2.6...
A sample is composed of a mixture of NaBr and CuSO...
Manganese comprises 1.3 x 10 -1 percent by mass of...
The compound dibromobis (ethylenediamine) cobalt(I...
Calculate the mass percent composition of sulfur i...
Calculate the mass percent composition of sulfur i...
What is the percentage by mass of N in Cu(NO 3)2?
...
Calculate the percent by mass of potassium nitrate...
Malachite is a green colored mineral that is 57.5%...
The main source of copper on earth is a mineral ca...
Clonidine, C9H9Cl2N3 is a antihypertensive drug of...
The complete combustion of 0.285 g of a pure hydro...
A 1.28 g sample of copper is heated with sulfur to...
The molecular formula for a sugar molecule is C12H...
Suppose you are working for a pharmaceutical compa...
What is the percent mass of H2O in Epsom salt, CaS...
Calculate the percentage by mass of lead in Pb(NO3...
Calculate the mass percent composition of lithium ...
What is the % of carbon by mass in Calcium Cyanide...
Calculate the mass percent composition of lithium ...
What is the percent by mass of oxygen in Ca(NO3)2?...
Which of these compounds contains the greatest per...
Phenylenediamine (pictured below) is mainly used a...
What mass of NaCl is contained in 24.88 g of a 15....
Calculate the mass percent of iodine in strontium ...
Copper (II) fluoride contains 37.42% F by mass.Use...
Common brass is a copper and zinc alloy containing...
A 67.2 g sample of a gold and palladium alloy cont...
A 67.2 g sample of a gold and palladium alloy cont...
A phosphorus compound that contains 34.00% phospho...
A particular brand of beef jerky contains 5.51×10−...
Phosphorus is obtained primarily from ores contain...
A mixture of NaCl and NaBr has a mass of 2.05 g a...
Lead is found in Earths crust as several different...
Because of increasing evidence of damage to the oz...
One of the best-selling light, or low-calorie, bee...
Pure gold is usually too soft for jewelry, so it i...
A compound whose empirical formula is XF3 consists...
A compound isolated from the rind of lemons is fou...
A compound isolated from the rind of lemons is fou...
A compound isolated from the rind of lemons is fou...
A compound isolated from the rind of lemons is fou...
Silver chloride, often used in silver plating, con...
Glycine, an amino acid used by organisms to make p...
The effectiveness of nitrogen fertilizers depends ...
When 13.63
g (about one tablespoon) of table sug...
The nitrogen in sodium nitrate and in ammonium sul...
Determine the chemical formula of each of the foll...
Determine the chemical formula of each of the foll...
Determine the chemical formula of each of the foll...
Determine the chemical formula of each of the foll...
Most fertilizers consist of nitrogen-containing co...
Most fertilizers consist of nitrogen-containing co...
Most fertilizers consist of nitrogen-containing co...
Most fertilizers consist of nitrogen-containing co...
Despite Dalton’s laws, it is now known that many i...
A metal (M) forms a compound with the formula MCl3...
Most fertilizers consist of nitrogen-containing co...
A metal (M) forms an oxide with the formula M2 O.I...
An aqueous NaCl solution is made using 126 g of N...
Silver nitrate solutions are often used to plate s...
Lead is a toxic metal that affects the central ner...
How much dry solute would you take to prepare each...
A mixture of CaCO3 and (NH4 )2 CO3 is 61.1 %
CO...
How much dry solute would you take to prepare each...
A sulfuric acid solution containing 571.5 g of H2...
A particular coal contains 2.55% sulfur by mass. W...
Without doing any calculations, arrange the elemen...
Calculate the number of moles of solute present in...
Describe how you would prepare each of the followi...
What is the mass percentage of iodine (I2) in a so...
Without doing any calculations, list the elements ...
Calculate the percentage by mass of oxygen in the ...
Calculate the percentage by mass of oxygen in the ...
Without doing any calculations, determine which el...
Calculate the percentage by mass of oxygen in the ...
Without doing any calculations, determine which el...
Calculate the percentage by mass of oxygen in the ...
Without doing any calculations, determine which el...
Calculate the percentage by mass of oxygen in the ...
Without doing any calculations, determine which el...
Calculate the percentage by mass of oxygen in the ...
Based on the following structural formulas, calcul...
Based on the following structural formulas, calcul...
Based on the following structural formulas, calcul...
Water softeners often replace calcium ions in hard...
Three common hydrocarbons that contain four carbon...
Three common hydrocarbons that contain four carbon...
Three common hydrocarbons that contain four carbon...
A hard water sample contains 8.5×10−3
%
Ca by ...
Calculate the mass percent composition of carbon i...
Calculate the mass percent composition of carbon i...
Calculate the mass percent composition of carbon i...
Calculate the mass percent composition of carbon i...
The density of air at sea level and 98 °F is about...
Rank the following fertilizers in decreasing order...
Calculate the mass percent composition of carbon i...
Calculate the mass percent composition of carbon i...
Calculate the mass percent composition of carbon i...
Calculate the mass percent composition of carbon i...
Calculate the mass percent composition of nitrogen...
Calculate the mass percent composition of nitrogen...
Calculate the mass percent composition of nitrogen...
Calculate the mass percent composition of nitrogen...
Iron from the earth is in the form of iron ore. Co...
The molecular weight of ethanol (C2H5OH) is 46.1 a...
The molecular weight of ethanol (C2H5OH) is 46.1 a...
Copper(II) fluoride contains 37.42% F by mass. Cal...
Silver chloride, often used in silver plating, con...
Determine the chemical formula of each compound an...
Determine the chemical formula of each compound an...
Determine the chemical formula of each compound an...
Calculate the mass of HCl (molar mass = 36.46 g/mo...
Determine the chemical formula of each compound an...
A mixture contains only NaCl and Fe(NO 3)3. A 0.45...
What is the mass percent of each element in sulfur...
Anabolic steroids are performance enhancement drug...
Fungal laccase, a blue protein found in wood-rotti...
Hemoglobin is the protein that transports oxygen i...
What is the mass percentage of each element in the...
Express the composition of each of the following c...
Express the composition of each of the following c...
Express the composition of each of the following c...
Without doing any calculations, determine which el...
Without doing any calculations, determine which el...
Without doing any calculations, determine which el...
A solution is prepared by dissolving 98.6 g of NaC...
Calculate the following:Mass % of O in sodium dihy...
A solution was prepared by dissolving 39.0 g of K...
Magnesium carbonate (MgCO3) and calcium carbonate ...
A 5.00 g sample of a gas mixture, consisting of me...
Ascorbic acid (vitamin C) contains 40.92% carbon, ...
Coke is an impure form of carbon that is often use...
2.489 g of cesium oxalate are dissolved in enough ...
Calculate the percent recovery of a component of a...
Many cereals are made with high moisture content s...
A sample of LSD (D-lysergic acid diethylamide, C24...
Hemoglobin is 6.0% heme (C34H32FeN4O4) by mass. To...
Hemoglobin, the oxygen-carrying protein in red blo...
A typical formulation for window glass is 75% SiO2...
Hydrocarbon mixtures are used as fuels. (a) How ma...
The active compound in Pepto-Bismol contains C, H,...
The space shuttle environmental control system han...
Manganese is a key component of extremely hard ste...
The percent by mass of nitrogen for a compound is ...
Calculate the number of moles of solute present in...
Fungal laccase, a blue protein found in wood-rotti...
Copper(I) iodide (CuI) is often added to table sal...
Hemoglobin is the protein that transports oxygen i...
Citric acid (below) is concentrated in citrus frui...
Many cereals are made with high moisture content s...
A compound containing only sulfur and nitrogen is ...
Determine the molecular formula of a compound that...
A compound contains 47.08% carbon, 6.59% hydrogen,...
Vitamin B12, cyanocobalamin, is essential for huma...
Some bismuth tablets, a medication used to treat u...
Maleic acid is an organic compound composed of 41....
A binary compound between an unknown element E and...
What mass (in grams) of iron(III) oxide contains 5...
If someone consumes 23 g of sodium chloride per da...
The compound XCl4 contains 74.8% Cl by mass.What i...
Solar winds composed of free protons, electrons, a...
The American Dental Association recommends that an...
Commercial brass, an alloy of Zn and Cu, reacts wi...
Ammonium dihydrogen phosphate, formed from the rea...
Hemoglobin, a protein in red blood cells, carries ...
Hemoglobin is 6.0% heme (C34H32FeN4O4) by mass. To...
The iodide ion is a dietary mineral essential to g...
Nitrogen forms more oxides than any other element....
Hemoglobin is 6.0% heme (C34H32FeN4O4) by mass. To...
Calculate the mass percentage of NaCl in a solutio...
A substance X2Z has the composition (by mass) of 4...
Hemoglobin is 6.0% heme (C34H32FeN4O4) by mass. To...
Calculate the mass percent composition of each con...
Calculate the mass percent composition of each con...
Calculate the mass percent composition of each con...
Arrange the following substances in order of incre...
Calculate the mass percent composition of each con...
The seven most abundant ions in seawater make up m...
The seven most abundant ions in seawater make up m...
Calculate the mass percent composition of each con...
Calculate the mass percent composition of each con...
The seven most abundant ions in seawater make up m...
Calculate the mass percent composition of each con...
The seven most abundant ions in seawater make up m...
Calculate the mass percent composition of each con...
Succinic acid (below) is an important metabolite i...
A dioxin-contaminated water source contains 0.086 ...
Fluorite, a mineral of calcium, is a compound of t...
Fluorite, a mineral of calcium, is a compound of t...
Galena, a mineral of lead, is a compound of the me...
Galena, a mineral of lead, is a compound of the me...
Hydrocarbon mixtures are used as fuels. (b) A 252-...
Nitrogen (N), phosphorus (P), and potassium (K) ar...
List the elements in the compound CF2Cl2 in order ...
Manganese is a key component of extremely hard ste...
The human body excretes nitrogen in the form of ur...
Calculate the percent composition by mass of the f...
Nitrogen (N), phosphorus (P), and potassium (K) ar...
Calculate the percent composition by mass of the f...
A solution is made containing 21.2 g phenol (C6H5O...
Calculate the percent composition by mass of the f...
In 1987 the first substance to act as a supercondu...
Describe how you would prepare each of the followi...
When carbon-containing compounds are burned in a l...
Acetic acid (HC2H3O2) is the active ingredient in ...
Calculate the percentage by mass of the indicated ...
Calculate the percentage by mass of the indicated ...
Calculate the percentage by mass of the indicated ...
Calculate the percentage by mass of the indicated ...
Arrange the following substances in order of incre...
Calculate the percentage by mass of the indicated ...
Calculate the percentage by mass of the indicated ...
Calculate the mass percent composition of sodium i...
Express the composition of formaldehyde, CH2O, as ...
Calculate the following to four significant figure...
Calculate the following to four significant figure...
Calculate the following to four significant figure...
Express the composition of glucose, C6H12O6, as th...
Express the composition of acetic acid, HC 2H3O2, ...
Determine the following to four significant figure...
Determine the following to four significant figure...
Determine the following to four significant figure...
Determine the percent ammonia, NH3, in Co(NH3)6Cl3...
Determine the percent water in CuSO4∙5 H2O to thre...
Hydrogen-containing fuels have a “fuel value” base...
Calculate the percentage of carbon by mass in each...
Anabolic steroids are performance enhancement drug...
Calculate the percentage of carbon by mass in each...
Calculate the percentage of carbon by mass in each...
Calculate the percentage of carbon by mass in each...
Nitrogen monoxide (NO) is a bioactive molecule in ...
The anticancer drug Platinol (cisplatin), Pt(NH3)2...
A potassium bromide solution is 7.55% potassium br...
Calculate the following;Mass % of H in ammonium bi...
Calculate the following:Mass % of I in strontium p...
A sample of LSD (D-lysergic acid diethylamide, C24...
Calculate the following:Mass % of Mn in potassium ...
Calculate the following:Mass fraction of C in cesi...
Calculate the following:Mass fraction of O in uran...
Calculate the following:Mass fraction of Cl in cal...
Calculate the following:Mass fraction of N in dini...
Iron is mined from the earth as iron ore. Common o...
Iron is mined from the earth as iron ore. Common o...
Seawater is approximately 4.0% by mass dissolved i...
An iron ore sample contains Fe2O3 plus other impur...
Iron is mined from the earth as iron ore. Common o...
Iron is mined from the earth as iron ore. Common o...
What is the percentage of nitrogen, by mass, in ca...
Seawater is approximately 4.0% by mass dissolved i...
High-temperature superconducting oxides hold great...
Commercial brass, an alloy of Zn and Cu, reacts wi...
Acetaminophen (below) is a popular nonaspirin pain...
The effectiveness of a nitrogen fertilizer is dete...
Fluorine is so reactive that it form compound with...
Ammonium dihydrogen phosphate, formed from the rea...
An aqueous KNO3 solution is made using 77.6 g of K...
Magnesium oxide (MgO) forms when the metal burns i...
Zinc sulfide (ZnS) occurs in the zincblende crysta...
Calculate the mass percent composition of nitrogen...
Calculate the mass percent composition of nitrogen...
Calculate the mass percent composition of nitrogen...
Calculate the mass percent composition of nitrogen...
Dolomite is a carbonate of magnesium and calcium. ...
Propenoic acid, C3H4O2, is a reactive organic liqu...
The mass percent of sulfur in a sample of coal is ...
Propenoic acid, C3H4O2, is a reactive organic liqu...
Nitrogen forms more oxides than any other element....
What mass of sucrose (C12H22O11), in grams, is con...
A solution is prepared by dissolving 50.5 g sucros...What is the concentration of sodium in the soft dr...Determine amount of potassium chloride in each sol...
An oxybromate compound, KBrOx, where x is unknown,...
A compound whose empirical formula is XF3 consists...Determine the amount of potassium chloride in each...Calculate the percent composition by mass of each ...What is the mass percentage of a solution prepared...Calculate the percent composition of:Sodium sulfat...A doctor orders 0.070 g of chlorpromazine, which i...Calculate the concentration in %(w/w) of the follo...How many grams of CaCl2 are needed to make 635.3 g...Calculate the percent by mass of C in pentaerythri...The mass of solute per 100 mL of solution is abbre...How many grams of a 18.5% sugar solution contain 7...A phosphorus compound that contains 13.07% phospho...Enter your answer in the provided box.A chemical e...
A student heated a 2.488 g sample of a hydrated ir...
Ethane has molecular formula C2H6. What is the per...Calculate the percent by mass of O in pentaerythri...What is the concentration in mass percent (w/w), o...Isopropyl alcohol is mixed with water to produce a...