1 How does atomic theory account for the fact that when 1.000 g of water is decomposed into its elements, 0.111 g of hydrogen and 0.889 g of oxygen are obtained regardless of the source of the water?

Q: 4) Use the mass spectrum below to fill out the information in the table about each isotope. 0.56…

A: Mass spectrum is the technique used in analytical chemistry for the separation of ions based on the…

Q: 3. Oxygen has an atomic number of 8, an atomic mass of 16, and it is neutrally charged.

A:

Q: The mass of 6 million molecules of a diatomic gas is 5.1  × 10-19 kg. What is the atomic mass of the…

A: Mole concept: The number of molecules or atoms present in the one mole of the substance is equal to…

Q: The U.S. Environmental Protection Agency (EPA) sets limits on healthful levels of air pollutants.…

A: The number of lead atoms can be calculated as follows:

Q: Polymer poly ethyl cyanoacrylate, also known as "Super Glue", has the following composition: 57.59%…

A: Percentage composition of carbon = 57.59 % Atomic mass of carbon = 12.01 amu Molar ratio of carbon =…

Q: What is the molecular mass of Sodium hydroxide given by the chemical formula “NaOH”. Atomic masses…

A: According to the question the chemical formula of sodium hydroxide is "NaOH"  Molecular mass is the…

Q: Which of the following are poor conductors of heat and electricity? O Transition elements O Halogens…

A: Elements can be classified into 3 forms, that is metals, non-metals, and metalloids. Metals are the…

Q: 6. OCHS 7. 8. 9. HO SH 10.

A: The IUPAC refers to International Union of Pure and Applied Chemistry.  every compound is its IUPAC…

Q: How has the understanding of the structure of the atom changed over time? Briefly describe the…

A:

Q: 2-81. (*) A 40.0-milligrams sample of the compound X.O, contains 22.5 milligrams of oxygen atoms.…

A: We have a 40 mg of sample  of X4O10, which contain 22.5 mg of oxygen atoms,  We have to calculate…

Q: Which pair of elements would you expect to exhibit the greatest similarity in their physical and…

A:

Q: Which pair of elements would you expect to exhibit the greatest similarity in their physical and…

A: Periodic table represents the systematic arrangement of elements in which the properties of these…

Q: 4B.2 Name the following compounds. a) Br b) F Br e) f) an

A:

Q: 2. Consider the element Uranium, U. Determine which isotopes are naturally occurring. Look up the…

A: The average atomic weight from the given mass number and natural abundance of each isotope of the…

Q: 3. A) Boron, element number 5, exists in only two common stable isotopes. They are B-10 and B-11.…

A: A) Given : There are only 2 naturally isotopes of boron i.e B-10 and B-11. The average atomic mass…

Q: Determine the atomic mass of potassium, given the information about potassium's stable isotopes.…

A: Given that : Mass of K-39 = 38.96370 amu Mass of K-41 = 40.96183 amu % abundance of K-39 = 93.258 %…

Q: Imagine an alternate reality. The Thomson cathode ray experiments arrived at a charge to mass ratio,…

A: Here, we have to determine mass of electron.

Q: 2. Water is made of two elements, hydrogen, and oxygen. What possible elements could substitute for…

A:

Q: 3. A. B. C. A chlorine atom has 18 neutrons and an atomic mass of 35. How many protons are in the…

A: In an atom three fundamental particles are present. Positively charged particle proton and neutral…

Q: Titanium has five common isotopes: 46Ti (8.000%, 45.95 amu), 47 T (7.800%, 46.95 amu), 48Ti (73.40%,…

A: Given 46Ti (8.000%, 45.95 amu), 47 Ti (7.800%, 46.95 amu), 48Ti (73.40%, 47.95 amu), 49Ti (5.500%,…

Q: 6. Subatomic Particles. Fill in the blanks in the following (table 1). Show your solution 54.24…

A: Fill the table by using suitable number and symbol---

Q: Which of the following could describe an element?   I II III All of them None of them

A: Matter: Matter can be defined as any component which occupies space and has mass.

Q: Mendeleev used chemical reactivity to determine how to organize the elements of the periodic table…

A: Mendeleev's Periodic table was arranged based on the atomic masses of the element, a group of…

Q: A new compound has the empirical formula GaCl2. Thissurprises some chemists who, based on the…

A: The empirical formula of new compound is s GaCl2 . Since gallium is belongs to group 13, it exhibit…

Q: 11. How many oxygen atoms are there in one formula unit of Ca2*?

A: 1. Formula unit is used to indicate lowest reduced ratio of ions in the compound  2. Molarity :…

Q: chlorine has two different isotopes. one isotope has a mass of 35.00 amu and another has a mass of…

A: Average atomic mass of Chlorine depends on the relative abundance of the isotope present in the…

Q: Helium is a noble gas which does not like to make compounds. As it is a lightweight gas, any Helium…

A: Helium is a noble gas, and a very light one at that. Because it is a noble gas, it doesn’t react…

Q: 5) Elements in the last column of the periodic table are called, 6) What distinguishes one element…

A: 5. Elements in the last column of the periodic are called Noble gases 6. The atoms of the element .…

Q: 9) If an element has its atomic mass as 24, it can be Magnesium?lf yes? No? What information is…

A: Metal :- which are good conductor of electricity.  Non-metal :- which do not conduct electricity.…

Q: A sample is found to contain 63.65% nitrogen and 36.35% oxygen. What is its chemical formula? O N20…

A: Emperical formula can be determined from the % of different elements present in a molecule. If…

Q: C. What is the weight of ferrous sulfate FeSOa.7H: 0 should be taken to designate iron as ferric…

A: Recall the following reaction that will occur on heat of hydrated ferrous sulphate      FeSO4.7H2O…

Q: Which pair of elements do you expect to be most similar in their chemical properties?a) K and Fe…

A: Most similar in their chemical properties

Q: Which of the highlighted elements in Figure P2.7 is (a) a reactive nonmetal, (b) a chemically inert…

A: Reactive metals exist in group 1 of the long form of periodic table. Group 1 is placed at the…

Q: Which pair of elements would you expect to exhibit the greatest similarity in their physical and…

A: The properties of elements are dependent over their electronic distribution. The similarity in the…

Q: 5. Which of the following is a species with 12 protons and 10 electrons? a) Ne?* b) Ti2* c) Mg? d)…

A: Number of proton = atomic number Number of electrons =( atomic number) +- charges

Q: Part D Complete column 4 of the table, excluding the isotope symbol and the cells that are already…

A: The atomic number of an atom is the number of protons present in the atom. For a neutral atom, the…

Q: 1. How does atomic theory account for the fact that when 1.000 g of water is decomposed into its…

A: The atomic theory was first proposed by John Dalton in the year 1803.

Q: Hydrogen sulfide is a gas with the odor of rotten eggs. The gas can sometimes be detected in…

A:

Q: In the periodic table, do the chemical properties change more than through a period or through a…

A: Periodic table is table in which the elements are arranged based on there electronic configurations.…

Q: Is the statement inconsistent with Dalton’s atomic theory as it was originally stated? Why? An…

A: Is the given statement inconsistent with Dalton's atomic theory as it was originally stated has to…

Q: 2. The creation of carbon monoxide is an effect. What is one cause? A. the regrouping of the atoms…

A: 2. Operating a stove. 3.  A harmless compound can become harmful when its elements are separated. 4.…