Which of the following statements is true about a compound? A compound is always made up of different types of atoms bonded together in proportions that may vary. A compound is always made up of the same type of elements bonded together in fixed proportions. A compound is always made up of different  types of atoms bonded together in proportions that are fixed. All of the above.

Q: 1. Which of the following substances is an element? А. Ice В. Coal С. Sand D. Iron 2. Which of the…

A: The structure of an atom, as studied by scientist such as J. J. Thomson, Ernest Rutherford and Neils…

Q: Which of the following is a part of Dalton's atomic theory? Group of answer choices Atoms are almost…

A: Dalton's atomic theory was the first complete attempt to describe all matter in terms of atoms and…

Q: Which if the following ionic compounds would contain the most total number of elements? (For…

A: Explanation to the correct answer is given below

Q: Which of the following characteristics is unique to the element calcium O Calclum is highly…

A: The calcium atom has an atomic number of 20.

Q: (2.3) Which of the following pairs shows the law of multiple proportions? O All of these O C3H7Cl…

A: Given,  Which of the following pairs shows the law of multiple proportions.

Q: Write the symbols and charges for the atoms given below and then identify it as anion/cation and…

A: Here is your answer

Q: Calculate the relative abudance of the two europium isotopes.

A: According to the question Eu-151 has mass 150.916 amu and Eu-153 has mass 152.9209.  The average…

Q: Which of the following pairs of compounds illustrates the law of multiple proportions?   a. Fe, FeO3…

A: In the law of multiple proportions, two elements react with each other to form more than one…

Q: Explain how all compounds obey the laws of definite and multiple proportions.

A: All matter can be classified as solid, liquid and gases mainly. In these physical states of matter,…

Q: Write the name of the following elements, ions, or compounds: (please answer all questions in order)…

A: Since we only answer up to 3 sub-parts, we’ll answer the first 3. Please resubmit the question and…

Q: There are 100g of two different compounds that are composed of Sulfur and Oxygen. The first compound…

A: given:  100 g of compound A contains: 50 g of S and 50g of O  100g of compound B contains 40 g S and…

Q: Write    the    correct    formula    for    the    compound    corresponding    to    each    of…

A:

Q: Identify all of the true statements regarding elements, compounds, and pure substances.    Pure…

A: Pure elements are made up of a single type of atom only. All the atoms should be of similar type.…

Q: Using triangles to represent one type of atom and circles to represent another type of atom, draw…

A: Given: Using triangles to represent one type of atom and circles to represent another type of atom,…

Q: What is the symbol of an ion with 16 protons, 18 neutrons, and 18 electrons? What is the symbol for…

A: 16proton 18neutron 18electron ion is  This is a Isotope of Sulphu which has mass of 34 and ion is…

Q: Which could be used to demonstrate the law of multiple proportions?  A. CuBr2 and CuCl  B. MgS and…

A: Law of multiple proportions is one of the laws of chemical combination and was proposed by Dalton.

Q: Use the periodic table to give the name and symbol for each of the following elements: (a) the…

A: The answer of the above questions are given in following steps

Q: Consider a series of four technetium isotopes and ions. 98 Tc 43 99 99 Tc Tc 43 96 Tc 43 44 Which of…

A:

Q: 2. In the previous example, you added 4 Boron-11 isotopes to 1 Boron-10 to make the average atomic…

A: given, to form a mixture, we added number of boron-11  = 4  number of boron- 10 = 1

Q: Use the periodic table to give the name and symbol for each of the following elements: (a) the…

A: In a period the electrons are filled in the same shell and in a group, the electrons are filled in…

Q: Sulfur forms two oxides. In one of them, 1.87 grams of sulfur combines with 1.87 grams of oxygen,…

A: The rule of multiple proportions put forwards that for the formation of multiple number of compounds…

Q: Which of the solids making up the mixture you are given is an ionic compound?

A: An atom is made up of electrons, which revolves around the center of an atom, protons, and neutrons.…

Q: Elements "X" and "Y" react in two different ways to form two different compounds. 64.128g of "X"…

A: Law of Definite Proportion : This law states that every components in a compound will always contain…

Q: Fill in the blanks using the following terms: atom, element, ion, isotope, molecule, compound. a. A…

A: The simplest form of a pure substance that can neither be broken down nor can be composed from…

Q: Carbon can react with hydrogen to form several different compounds. Two compounds that contain only…

A: Law of multiple proportions relate the mass number of reactants.

Q: Which of the following represents isotopes? 1. The different mass numbers of an element. 2.…

A: Two substances are said to be isotopes of each-other if they have the same atomic number but…

Q: 2.27 Show, with calculations, how the following data illustrate the law of multiple proportions:…

A: According to law of multiple proportion, when two elements combine with each other to form more than…

Q: An elemental molecule is a molecule containing: two or more atoms of two different elements in…

A: A molecule is an electrically neutral atom or group of atoms that can exist independently.

Q: 4. Which pair could be used to demonstrate the law of multiple proportions? O A. CuCl2 and CuCl O B.…

A: Since you have asked multiple questions, we will solve the first question for you. If you want any…

Q: 2. Fill in the blanks. symbol element capital atom lowercase two solid a) All mater is made up of…

A: All questions are based on general inorganic chemistry related to definitions.

Q: Sulfur and fluorine form at least two compounds-SF4 and SF6. Explain how these compounds can be used…

A:

Q: Fill in the gaps in the following table: Symbol Protons 34 50 Neutrons 45 69 118 Electrons 46 76 Net…

A: The given table has to be filled,

Q: Fill in the gaps in the following table, assuming each columnrepresents a neutral atom.

A: Atomic Number of an element (Z) =total number of proton present in the nucleus…

Q: Use the periodic table to give the name and symbol for each of the following elements:(a) the…

A: a) the halogen in the same period as the alkali metal with 11 protons  the alkali metal with 11…

Q: Explain the difference between the law of definite proportions and the law of multiple proportions?

A: Law of definite proportion is introduced by Joseph Proust in 1799 whereas Law of multiple proportion…

Q: Which statement is FALSE? O Pure water (H20) is always composed of 2 hydrogen atoms to 1 oxygen atom…

A:

Q: 1. Nitrogen and oxygen elements can form NO and N,0 compounds. A total of 14 grams of elemental…

A: We have to verify the given law.

Q: true or false (h)  All atoms of the same element have the same number of electrons.  (b) All atoms…

A: h) All atoms of the same element have the same number of electrons. The given statement is False.…

Q: Answer the following True/False questions: Write T for True and F for False. Moreover, if the…

A:

Q: What are the main ideas in Dalton's atomic theory? Check all that apply. Each atom is composed of…

A:

Q: Which of the following has 35 protons, 45 neutrons, and 35 electrons? Please look up the atomic…

A:

Q: According to Dalton's atomic concept: the difference between the law of constant composition and law…

A: Given: Law of composition and law of multiple proportions has just the difference of ratio of…

Q: Write the name of the following elements, ions, or compounds: (please answer all questions in…

A: Given a.) the element that has 16 protons b.)  the ion with a -1 charge that has 18 electrons c.)…

Q: Write the molecular and structural formulas for the compounds represented by the following molecular…

A: Here we have to write the molecular and structural formula of above model system molecules-

Q: Classify the statements pertaining to elements and compounds as either true or false. True False…

A: We are given different statements in the image we have to classify the statement as true and false:…

Q: Write the names for the elements in each of the following formulas of compounds used in medicine:…

A: The elements present in the following compounds are,

Q: Which answer can be used to illustrate the law of multiple proportions?    a, CO2, H2CO3 b, CH4, CO2…

A: To solve this problem we need to know the Law of multiple proportion  and postulate of Dalton Atomic…

Q: 14. One compound of elements X and Y contains 35.2% X (by mass); another compound contains 24.6% X.…

A: The chemical formula of compound is represented by the atoms of the elements as their chemical…

Q: Which statement (s) below about isotopes of the same element is True? I. They have the same number…

A: Isotopes are the elements that have same atomic number but different mass number.    Chemical symbol…