Chemistry Chemistry Practice Problems Solutions Library

Law of Definite Proportions Solutions Library

Access 67 Law of Definite Proportions video and text solutions to help you complete your homework. Need to revisit the concept? Watch our Law of Definite Proportions learn videos.

Browse Solutions

67 solutions

Law of Definite Proportions

Q. What is the chemical formula for quartz?Express your answer as a chemical formula.Matter is made up atoms, but in a real chemistry lab, we measure ...

Solved • Jul 1, 2020

Law of Definite Proportions

Q. Part C. A solution of ammonia and water contains 2.20×1025 water molecules and 8.80×1024 ammonia molecules. How many total hydrogen atoms are in th...

Solved • Jul 1, 2020

Law of Definite Proportions

Q. Part A. What is the ratio of hydrogen atoms (H) to oxygen atoms (O) in 2 L of water? Enter the simplest whole number ratio in order of hydrogen to ...

Solved • Jul 1, 2020

Law of Definite Proportions

Q. How many atoms of Mg, O, and H are represented by the notation 3 formula units Mg(OH)2?

Solved • Oct 31, 2018

Law of Definite Proportions

Q. Consider CH4.Does the formula contain more than one type of atom?a) No b) Yes c) This is not a valid question for CH4

Solved • Oct 31, 2018

Law of Definite Proportions

Q. Determine the number of each type of atom in each formula:Ba(OH)2

Solved • Oct 31, 2018

Law of Definite Proportions

Q. Determine the number of each type of atom in each formula:NH4Cl

Solved • Oct 31, 2018

Law of Definite Proportions

Q. Determine the number of each type of atom in each formula:NaCNA) 1 sodium atom, 1 carbon atom and 2 nitrogen atoms. B) 1 sodium atom, 2 carbon atom...

Solved • Oct 31, 2018

Law of Definite Proportions

Q. Determine the number of each type of atom in each formula:Ba(HCO3)2

Solved • Oct 31, 2018

Law of Definite Proportions

Q. The chloride of an unknown metal is believed to have the formula MCl3. A 1.891 g sample of the compound is found to contain 3.606 x 10 - 2  mol Cl....

Solved • Oct 31, 2018

Law of Definite Proportions

Q. Write a ratio showing the relationship between the amounts of each element for each of the following:Part (a):A) 3O:C B) 2O:C C) O:C D) O:2C

Solved • Oct 31, 2018

Law of Definite Proportions

Q. Write a ratio showing the relationship between the amounts of each element for each of the following:(b) A) 2H:OB) 2H:2O C) 3H:OD) H:2O

Solved • Oct 31, 2018

Law of Definite Proportions

Q. Write a ratio showing the relationship between the amounts of each element for each of the following:(c)A) 2H:O B) 3H:O  D) 2H:2O 

Solved • Oct 31, 2018

Law of Definite Proportions

Q. Write a ratio showing the relationship between the amounts of each element for each of the following: (a)A) 2H:OB) 3H:OC) 2H:2OD) H:2O

Solved • Oct 31, 2018

Law of Definite Proportions

Q. Write a ratio showing the relationship between the amounts of each element for each of the following: (b)A) H:2C B) H:4CC) 4H:C D) 2H:C

Solved • Oct 31, 2018

Law of Definite Proportions

Q. Write a ratio showing the relationship between the amounts of each element for each of the following: (c)A) 6H:2C:OB) 4H:C:OC) 3H:2C:OD) 6H:C:O

Solved • Oct 31, 2018

Law of Definite Proportions

Q. Determine the number of each type of atom in each formula:Ca3(PO4)2

Solved • Oct 31, 2018

Law of Definite Proportions

Q. Determine the number of each type of atom in each formula:SrCl2

Solved • Oct 31, 2018

Law of Definite Proportions

Q. Determine the number of each type of atom in each formula:KNO3a) 3 potassium atoms, 3 nitrogen atoms and 3 oxygen atoms. b) 1 potassium atom, 3 nit...

Solved • Oct 31, 2018

Law of Definite Proportions

Q. Determine the number of each type of atom in each formula:Mg(NO2)2

Solved • Oct 31, 2018

Law of Definite Proportions

Q. The molecular formula for water is H2O. Which ratio can be correctly derived from this formula?

Solved • Oct 31, 2018

Law of Definite Proportions

Q. In methane, one part hydrogen combines with three parts carbon by mass.If a sample of a compound containing only carbon and hydrogen contains 32.0 ...

Solved • Oct 25, 2018

Law of Definite Proportions

Q. In borane, one part hydrogen combines with 3.6 parts boron by mass. A compound containing only hydrogen and boron contains 6.0 g of hydrogen and 43...

Solved • Oct 25, 2018

Law of Definite Proportions

Q. A 2.3-g sample of carbon dioxide (CO2) is fully decomposed into its elements, yielding 0.628 g of carbon and 1.67 g of oxygen.What is the ratio of ...

Solved • Oct 25, 2018

Law of Definite Proportions

Q. A sample of ascorbic acid (vitamin C) is synthesized in the laboratory. It contains 1.50 g of carbon and 2.00 g of oxygen. Another sample of ascorb...

Solved • Oct 25, 2018

Law of Definite Proportions

Q. How many hydrogen atoms are in each of the following:Ca(C2H5COO)2

Solved • Oct 25, 2018

Law of Definite Proportions

Q. How many of the indicated atoms are represented by each chemical formula?carbon atoms in C4H8COOCH3

Solved • Oct 25, 2018

Law of Definite Proportions

Q. How many of the indicated atoms are represented by each chemical formula?oxygen atoms in Ca(ClO3)2

Solved • Oct 25, 2018

Law of Definite Proportions

Q. How many of the indicated atoms are represented by each chemical formula?hydrogen atoms in (NH4)2HPO4

Solved • Oct 25, 2018

Law of Definite Proportions

Q. How many hydrogen atoms are in each of the following:C2 H5OH

Solved • Oct 25, 2018

Law of Definite Proportions

Q. A chemist finds that 30.82 g of nitrogen will react with 17.60 g, 35.20 g, 70.40 g, or 88.00 g of oxygen to form four different compounds.Calculate...

Solved • Oct 25, 2018

Law of Definite Proportions

Q. A chemist finds that 30.82 g of nitrogen will react with 17.60 g, 35.20 g, 70.40 g, or 88.00 g of oxygen to form four different compounds.Calculate...

Solved • Oct 25, 2018

Law of Definite Proportions

Q. A chemist finds that 30.82 g of nitrogen will react with 17.60 g, 35.20 g, 70.40 g, or 88.00 g of oxygen to form four different compounds.Calculate...

Solved • Oct 25, 2018

Law of Definite Proportions

Q. A chemist finds that 30.82 g of nitrogen will react with 17.60 g, 35.20 g, 70.40 g, or 88.00 g of oxygen to form four different compounds.Calculate...

Solved • Oct 25, 2018

Law of Definite Proportions

Q. Two samples of carbon monoxide are decomposed into their constituent elements. One sample produces 17.2 g of oxygen and 12.9 g of carbon, and the o...

Solved • Oct 25, 2018

Law of Definite Proportions

Q. Upon decomposition, one sample of magnesium fluoride produces 1.66 kg of magnesium and 2.58 kg of fluorine. A second sample produces 1.32 kg of mag...

Solved • Oct 25, 2018

Law of Definite Proportions

Q. Two samples of a compound containing elements A and B are decomposed. The first sample produces 15 g of A and 35 g of B.The second sample produces ...

Solved • Oct 25, 2018

Law of Definite Proportions

Q. Two samples of carbon tetrachloride were decomposed into their constituent elements. One sample produced 38.9 g of carbon and 451 g of chlorine, an...

Solved • Oct 25, 2018

Law of Definite Proportions

Q. Two samples of carbon tetrachloride were decomposed into their constituent elements. One sample produced 38.9 g of carbon and 451 g of chlorine, an...

Solved • Oct 25, 2018

Law of Definite Proportions

Q. Two samples of sodium chloride were decomposed into their constituent elements. One sample produced 6.51 g of sodium and 10.0 g of chlorine, and th...

Solved • Oct 25, 2018

Law of Definite Proportions

Q. The mass ratio of sodium to fluorine in sodium fluoride is 1.21:1. A sample of sodium fluoride produced 25.7 g of sodium upon decomposition.How muc...

Solved • Oct 25, 2018

Law of Definite Proportions

Q. A 7.74 g sample of HCN is found to contain 0.287 g of H and 4.01 g of N.Find the mass of carbon in a sample of HCN with a mass of 3.43 g.

Solved • Oct 25, 2018

Law of Definite Proportions

Q. Next, the chemist decomposes several samples of hydrogen peroxide into hydrogen and oxygen. The results are shown below:SampleMass of Hydrogen (g)M...

Solved • Oct 25, 2018

Law of Definite Proportions

Q. How many molecules of C2H4Cl2 can be prepared from 15 C2H4 molecules and 8 Cl2 molecules?

Solved • Oct 19, 2018

Law of Definite Proportions

Q. Early tables of atomic weights (masses) were generated by measuring the mass of a substance that reacts with 1.00 g of oxygen. Given the following ...

Solved • Oct 15, 2018

Law of Definite Proportions

Q. A sample of chloroform is found to contain 12.0 g of carbon, 106.4 g of chlorine, and 1.01 g of hydrogen. If a second sample of chloroform is found...

Solved • Oct 15, 2018

Law of Definite Proportions

Q. Scenes A–I on the next page depict various types of matter on the atomic scale. Choose the correct scene(s) for each of the following:(a) A mixture...

Solved • Oct 12, 2018

Law of Definite Proportions

Q. A compound of iodine and cesium contains 63.94 g of metal and 61.06 g of nonmetal. How many grams of cesium are in 38.77 g of compound? How many gr...

Solved • Oct 10, 2018

Law of Definite Proportions

Q. Two samples of sodium chloride were decomposed into their constituent elements. One sample produced 2.94 g of sodium and 4.53 g of chlorine. Which ...

Solved • Aug 14, 2018

Law of Definite Proportions

Q. Use the law of constant composition to complete the following table summarizing the amounts of nitrogen and oxygen produced upon the sample of dini...

Solved • Jul 11, 2018

Law of Definite Proportions

Q. What is the ratio of oxygen atoms to hydrogen atoms in the mineral aluminite Al2(SO4)(OH)4 . 7H2O?a. 8:4b. 15:18c. 18:15d. 15:11e. 11:15

Solved • May 26, 2017

Law of Definite Proportions

Q. A sample of H2SO4 contains 2.02 g of hydrogen, 32.07 g of sulfur, and 64.00 g of oxygen. How many grams of sulfur and grams of oxygen are present i...

Solved • Jul 19, 2016

Law of Definite Proportions

Q. How many of the indicated atoms are represented by each chemical formula: (c) hydrogen atoms in (NH4)2HPO4?

Solved • Jul 4, 2016

Law of Definite Proportions

Q. How many of the indicated atoms are represented by each chemical formula: (b) oxygen atoms in Ca(ClO4)2

Solved • Jul 4, 2016

Law of Definite Proportions

Q. How many of the indicated atoms are represented by each chemical formula: (a) carbon atoms in C2H5COOCH3

Solved • Jul 4, 2016

Law of Definite Proportions

Q. A sample of ascorbic acid (vitamin C) is synthesized in the laboratory. It contains 1.50 g of carbon and 2.00 g of oxygen. Another sample of ascorb...

Solved • Jul 4, 2016

Law of Definite Proportions

Q. Determine the number of each type of atom in each formula: d. Mg(HCO3)2

Solved • May 26, 2016

Law of Definite Proportions

Q. Determine the number of each type of atom in each formula: c. Al(NO3)3

Solved • May 26, 2016

Law of Definite Proportions

Q. Determine the number of each type of atom in each formula: b. CuSO4

Solved • May 26, 2016

Law of Definite Proportions

Q. Determine the number of each type of atom in each formula: a. Ca(NO2)2

Solved • May 26, 2016

Law of Definite Proportions

Q. A 7.83-g sample of HCN is found to contain 0.290 g of H and 4.06 g of N. Find the mass of carbon in a sample of HCN with a mass of 3.37 g.

Solved • May 23, 2016

Law of Definite Proportions

Q. Upon decomposition, one sample of magnesium fluoride produced 1.65 kg of magnesium and 2.57 kg of fluorine. A second sample produced 1.32 kg of mag...

Solved • May 20, 2016

Law of Definite Proportions

Q. The mass ratio of sodium to fluorine in sodium fluoride is 1.21: 1. A sample of sodium fluoride produced 28.8 g of sodium upon decomposition. How m...

Solved • May 20, 2016

Law of Definite Proportions

Q. Two samples of carbon tetrachloride were decomposed into their constituent elements. One sample produced 38.9 g of carbon and 448 g of chlorine, an...

Solved • May 20, 2016

Law of Definite Proportions

Q. A substance composed of 2 or more elements in a fixed, definite proportion is consideredA) a homogeneous mixture.B) a heterogeneous mixture.C) a co...

Solved • Apr 7, 2016

Law of Definite Proportions

Q. A compound contains only calcium and fluorine. A sample of the compound is determined to contain 2.00 g of calcium and 1.90 g of fluorine. Accordin...

Solved • Feb 11, 2016

Law of Definite Proportions

Q. Drinking alcohol is also called ethyl alcohol or ethanol. Most of the ethanol produced in the USA comes from corn, an obviously natural source. It ...

Solved • Feb 5, 2016