How many total atoms of each element are present in the following formulas? 3 CaCl2 Tap in the fields to enter the answers directly OR tap on the Number Pad icon to use our built-in Number Pad. Calcium (Ca) Chlorine (CI)

Q: Several of the compounds in previous problems require roman numerals. What information does the…

A: In naming of several compounds roman numerals are included.

Q: How many carbon atoms are there in a diamond (pure carbon) with a mass of 48 mg ? Express your…

A:

Q: Calculate the formula mass for each of the following compounds. Express your answer using two…

A: Formula mass is the sum of atomic masses of all the elements in the given molecular formula.

Q: An analytical chemist measures the amount of Elements E₁ and E₂ in four samples of an unknown…

A: Pure substance:-  The substance in which the ratio of each element mass is constant for all randomly…

Q: An unknown sugar is found to have a molecular weight of 180.18 amu. The sugar contains 40.O %…

A: Given data  Element composition (mass %) C 40 H 6.7 O 53.3 Molar mass of sugar = 180.18…

Q: What is the number of Carbon atoms in this chemical formula?   C_{11}H_{24}

A: The chemical formula is used to represent a compound. The given chemical formula of the compound is…

Q: Calculate the mass in grams of each of the following. Part A.    1.88x1024 atoms of krypton, Kr.…

A:

Q: Define each of the following as atomic element, molecular element, ionic compound, or molecular…

A: Using basics of elements, molecules , molecular compounds and ionic compounds.

Q: An analytical chemist measures the amount of Elements E, and E₂ in four samples of an unknown…

A:

Q: How many carbon atoms and oxygen atoms does each carbon dioxide molecule contain?

A: Since, Molecules are formed by the combination of same type of atom or different types atoms. Thus,…

Q: Co(NO3)2

A: a) First find out the moles of Co(NO3)2 :  moles = ( formula unit / Avogadro number )  Moles = (…

Q: A compound contains Carbon, Oxygen, and Fluorine. Determine the empirical formula (CXOYFZ) by…

A: First find the no. of moles of carbon atom by dividing with Avogadro no.

Q: The Japanese symbol for an atom has been written on a piece of copper metal using 99 iron atoms.…

A: 1 mol = 6.022×1023 [Avogadro's number]  The mass of one mole of atoms of an element is known as its…

Q: Sodium Chlorate is heated to yield Sodium Chloride and Oxygen. If you begin with ten grams of Sodium…

A: Applying concept of limiting reagent and mole concept

Q: A sample of hydrogen sulfide, H2S, has a mass of 57.25 g. Calculate the number of hydrogen sulfide…

A: Given data,Mass of H2S=57.25gMolar mass of H2S=34.1g/mol

Q: Write the empirical formula corresponding to each of the following molecular formulas.       C8H10,…

A: Empirical formula of any compound is the formula in which the atoms are present in the lowest whole…

Q: Calculate the mass in grams of 3.19 x 1024 molecules of propylamine. The chemical formula for…

A:

Q: A mole refers to the amount of substance which can be an atom, molecule, ion and other particle or…

A: Deck of cards , Bundle of sticks and piece of paper does not relate to concept of mole because it…

Q: The molecular formula of rimantadine is C12H21N.    How many carbon atoms are in 80.44 grams of…

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

Q: In the formula 2NH4, identify the following: Number or elements Number of Nitrogen atoms

A: In 2NH4 molecule

Q: What do we call a distinct substance that contains two or more elements chemically combined in…

A: 1.Element are the simplest form of matter Example ; lithium , barilium

Q: Classify each substance as an atomic element, molecular element, molecular compound, or ionic…

A: Answer:On the basis of different type of atoms present in its sample, substance can be categorized…

Q: An unknown compound has the following chemical formula: PbOx where x stands for a whole number.…

A:

Q: Which of the following has more atoms? Select the single best answer. Note: Reference the…

A: The question pertains to the concept of comparing the number of atoms in different quantities of…

Q: How many carbon atoms are present in 3.95 moles of carbon atoms? Give your answer in scientific…

A:

Q: Using your answers from above calculate the number of grams of these elements. Hydrogen in 124 g of…

A:

Q: 4 Part A Percent composition refers to the mass percent of each element in a compound mass percent ×…

A: Part A)To calculate the percent composition by mass of the hydrocarbon C7​H16​, we first need to…

Q: An unknown compound has the following chemical formula: PbOx where x stands for a whole number.…

A:

Q: How many total atoms are there in 67.9 g of water (H,O)?

A: Given: Mass of water = 67.9 g Known: Molar mass of water = 18 g/mol

Q: Question 30 ( A 2.47 g sample of hydrated cobalt(II) nitrate is heated. After heating, 1.55 g of…

A: Given, mass of sample of hydrated Co(NO3)2 = 2.47 g mass of pure Co(NO3)2 = 1.55 g Formula of…

Q: Record the number of each atom in the molecule, then record the total number of atoms in the…

A: We have to determine no of element and atoms

Q: Be sure to answer all parts. Enter your answers in scientific notation. Calculate the number of…

A: The compound given is Ca3(PO4)2. Mass of Ca3(PO4)2 given = 9.75 g Molar mass of Ca3(PO4)2 = Atomic…

Q: Match the left column correctly with the right column.         Hg2CL2 molecular element Silicon…

A: The table is given below:

Q: - Part A If Avogadro's number of pennies is divided equally among the 276 million men, women, and…

A: We know that, Avogadro's number of pennies = 6.022 x 1023 pennies. Convert these pennies into…

Q: A certain compound contains only three elements: carbon, hydrogen, and chlorine. A sample of the…

A:

Q: (Incorrect) How many total atoms are in 80.7 g of copper(II)sulfate? Provide your answer in…

A:

Q: Write a complete chemical formula, including physical state symbol, for each element listed below in…

A: Group 18 elements are called noble gases and they all are monoatomic gases.

Q: Three containers A, B, and C are filled with 32 g of oxygen gas (O2), 32 g of chlorine gas (Cl2),…

A: Since you have posted a question with multiple sub-parts, we will solve first three sub-parts for…

Q: When working in the lab, I take the mass of a sample of ammonium (NH3) and I find it to have a mass…

A: The mass of ammonia is = 45.74 g The mass of nitrogen is =? The mass of hydrogen is =?

Q: An analytical chemist measures the amount of Elements E₁ and E₂ in four samples of an unknown…

A: Since the unknown substance, X contains elements E1 and E2, it can be either a compound of E1 and…

Q: Classify the types of matter below: Name Formula Picture  Atom (Y/ N) Molecule (Y/ N)…

A: An atom is mainly composed of three sub-particles; electrons, protons and neutrons. These particles…

Q: hemical formula for the unknown compound.

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: Calculate the mass in grams of 2.84 x 1024 molecules of methanol. The chemical formula for methanol…

A: Given  Number of molecules of methanol = 2.84 × 1024 molecules  Chemical Formula of methanol      =…

Q: Write down the names and symbols of all the elements that are metals

A: There are 92 metals in the periodic table.

Q: 1. Calculate the percent abundance of each isotope and draw a pie graph showing the data. Percent…

A: The answer is given in below image.

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.