Two samples of sodium chloride are decomposed into their constituent elements. One sample produces 6.98 g of sodium and 10.7 g of chlorine, and the other sample produces 11.2 g of sodium and 17.3 g of chlorine. Are these results consistent with the law of definite proportions? Explain your answer

Q: In the dot diagram seen below which element could be represented by the letter X

A: In the given image, dots represent electrons.

Q: A sample of chloroform is found to contain 12.0 g of carbon, 106.4 g of chlorine, and 1.01 g of…

A: Given : Mass of carbon in sample 1 = 12.0 g Mass of chlorine in sample 1 = 106.4 g Mass of hydrogen…

Q: I Review I Constants I Periodic Table For the following atoms, give the number of protons, neutrons,…

A: Part A 2713Al ; Number of protons (Np ) = 13 Number of electrons (Ne ) = 13 Number of neutrons (Nn…

Q: What is the name of the element that is in group 1A and period 1? What is the name of the element…

A:

Q: Using white and black circles to represent different kinds of atoms, make a drawing that accurately…

A: Given samples of matter,         A solid element, a liquid compound, and a heterogeneous mixture.

Q: The metal magnesium consists of 3 isotopes with the following atomic masses and abundances: 24Mg -…

A: Given,  24Mg - 23.99 amu (78.70%) 25Mg - 24.99 amu (10.13%) 26Mg - 25.98 amu (11.17%).

Q: Suppose that atomic masses were based on the assignment of a mass of 12.000 g to 1 mol of carbon,…

A: An element is positioned on the basis of atomic number. Each atom will have a fixed and different…

Q: In the table below, there are descriptions of an experiment on samples of three different chemical…

A: Given that : We have to identify whether the elements are metal or non-metal form the given…

Q: Which of the following pairs of elements would you expect to be the most similar in both their…

A: In the periodic table, the elements are arranged according to their atomic number (electronic…

Q: An element has the following natural abundances and isotopic masses: 90.92% abundance with 19.99…

A:

Q: In a combustion reaction, 46.0 g of ethanol reacts with 96.0 g of oxygen to produce water and carbon…

A:

Q: An element has two isotopes. One isotope has a mass of 63.22 g. The other has a mass of 67.88 g. If…

A: An isotope of an element contains different number of neutrons in their nucleus. That is, isotopes…

Q: Density of the hydrogen atom Use the information below to calculate the density of the hydrogen-1…

A: Given : Radius of hydrogen atom = 53 pm Since 1 pm = 10-10 cm Hence radius of hydrogen atom in cm =…

Q: Use triangles to represent atoms of element A and circles to represent atoms of element B. Draw an…

A:

Q: Draw the graph for the isotopes of monatomic chlorine, "Cl and ³»CI. You don't need to include *CI…

A: The percentage abundance of Cl is as follows: 35Cl=75 % 37Cl=25 % The graph is as follows:

Q: Two samples of carbon tetrachloride are decomposed into their constituent elements. One sample…

A: The ratio of weights in the first sample is 448/ 38.9 = 11.5: 1. The no of moles of carbon and…

Q: 1. A 1.2-gram sample of lanolin was treated with Wij’s solution and excess potassium iodide…

A: Since you have posted multiple questions and not specified which one to solve, we will solve the…

Q: Determine the number of atoms in 1.85×10^-3L of Mercury. [The density of mercury is 13.5g/mL.]

A:

Q: 7) Magnesium consists of three naturally occurring isotopes. The percent abundance of these isotopes…

A: Step 1:Atomic mass of magnesium -24 is 23.80428 amu  Step 2: Step 3: Step 4:

Q: Magnesium has three stable isotopes. The most commonly occurring isotope, 24Mg, has an isotopic mass…

A: Average atomic mass of an atom can be calculated using the mass of their isotopes and their…

Q: Antinomy, Sb, has 2 isotopes and an atomic weight of 121.75 amu. The isotope anitimony-121 has a…

A:

Q: Consider two compounds. Compound A contains 2.77 g of phosphorus and 9.53 g of chlorine. Compound B…

A: Given,Mass of Phosphorus in compound B =11.9gMass of chlorine in compound B =40.9g

Q: A sample of chloroform is found to contain 12.0 g of carbon, 106.4 g of chlorine, and 1.01 g of…

A: According to law of constant proportional, any chemical compound will always contain the elements in…

Q: 1. A 1.2-gram sample of lanolin was treated with Wij’s solution and excess potassium iodide…

A: Since you have posted multiple questions and not specified which one to solve, we will solve the…

Q: 22. The density of magnesium is 1.74 g/cm. What is the mass of a magnesium block that measures 2.5…

A:

Q: Is the underlined part of the macroscopic domain, or the microscopic domain of chemistry ? A carbon…

A: The term macroscopic refers to the objects that can be seen by the naked eyes. Macroscopic is just…

Q: In the table below, there are descriptions of an experiment on samples of three different chemical…

A: Properties of metal  •  Lustrous  • High melting point and boiling point.  • Malleable - They can be…

Q: Consider the mass of Sulfur and Fluorine in compound A (16.6 g S, 9.80 g F) and compound B (23.2 g…

A: According to atomic theory the atoms do no react in arbitrary numbers but in multiples of fixed…

Q: Which observation illustrates the law of conservation of mass? A.)When 3 g of carbon reacts with 8…

A: Law of conservation of mass states that matter cannot be created nor to be destroyed in a chemical…

Q: Following the ideas above, show that this data illustrates the law of multiple proportions. (Compare…

A:

Q: The density of gold is 19.3 g/cm3, and the average mass for one gold atom is 3.27×10-22 g. Seven…

A: Given the density of gold, d = 19.3 g/cm3. 1 cm3 = 1 mL Hence density of gold, d = 19.3 g/mL…

Q: Hydrogen sulfide is composed of two elements: hydrogen and sulfur. In an experiment, 6.500 g of…

A: a)The mass of sulfur obtained is calculated as shown below,

Q: If a row of approximately 5.0 x 107 atoms measured 1.0 cm, how long would a row of 6.02 × 1023 atoms…

A: Given is row of atoms, 1.0 cm = 5.0×107 atoms 6.02×1023 atoms = ?

Q: In the periodic table, calcium, element 20, is surrounded by elements 12 magnesium , 19 potassium,…

A: The most resemple element of calcium atom is magnesium and Strontium.

Q: The planet Zoltan is located in a solar system in the Andromeda galaxy. On Zoltan, the standard unit…

A:

Q: Calculate the total mass of the protons and electrons in fluorine-19. Use 1.007825 amu as the mass…

A: Fluorine-19 has 9 protons and 9 electrons. Hydrogen-1 has 1 proton and 1 electron and its total mass…

Q: In what main way is separating the components of a mixture different from separating the components…

A: The mixing up of two or more substances gives a mixture. There is no chemical change observed in the…

Q: Two samples of sodium chloride with different masses were decomposed into their constituent…

A: Given: Mass of sodium in sample 1 = 2.91 g. And mass of chlorine in sample 1 = 4.48 g.

Atoms and Molecules

An atom is the smallest unit of an element that possesses all the properties of that particular element. Molecules are the smallest unit of a substance that possess all the properties of that particular substance.