Element A is an atomic element, and element B is a diatomic molecular element. Using circles to represent atoms of A and squares to represent atoms of B, draw molecular-level views of each element.

Q: How many atoms of silver are in a bracelet that weighs 34.0 g? O 1.1 x 1023 O 1.1 x 106 O 1.9 x 1023…

A: We have to calculate the number of atoms.

Q: 4. Many common dry-chemical fi re extinguishers contain ammonium phosphate, (NH4)3PO4(s), as their…

A:

Q: The compound(NH4)2 S2 O3, Which element is present in the largest percent by mass? A. N B. S C. O…

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Q: A sample of C,H, has 7.20 x 1024 H atoms. How many carbon atoms does the sample contain? number of…

A: Given : The compound is C3H8. And number of H atoms in compound = 7.20 X 1024 atoms. The number of…

Q: Consider the chemical formula for one molecule of methane, CH4. If instead of one molecule we had 10…

A: According to chemical formula of methane ( CH4 ) , it's very clear each molecule of methane has one…

Q: Formaldehyde, CH2O, is a toxic gas with a pungent odour. It is used in large quantities for the…

A: CH2O It is made o C, H and O

Q: The mass of a silver (Ag) coin is 15 g. If the coin is 50% Ag by mass, then how many Ag atoms are…

A: The given mass of the silver coin = 15 g Percentage composition by mass of silver (Ag) = 50% So,…

Q: What is the mass of 1.67 x 10^15 atoms on MN, 6.45 x 10^23 atoms of N, and 3.40 x 10^25 atoms of C…

A: Given :-  number of Mn atoms = 1.67 × 1015 atoms  number of N atoms = 6.45 × 1023 atoms  Number of C…

Q: A sample of a compound with the molecular formula C20H24N2O2 contains 2.75 x 1024 nitrogen atoms.…

A: Molar mass of any substance is the mass of one mole of the substance, which is expressed as g/mol.…

Q: Balance the following equation by filling the gaps with appropriate numbers. Na + NANO3 Na20 N2

A: Given here an unbalanced chemical reaction and we are asked to balance the reaction.

Q: If 10 magnesium(Mg) atoms and 10 chlorine(Cl) atoms were to bump into each other, coukd they combine…

A: If 10 atoms of magnesium and 10 atoms of chlorine bump into each other, they will combine to form a…

Q: A sample of oxygen gas weighs 28.4 g. How many atoms of oxygen are present in this sample? The…

A: Here we have told that a sample of oxygen gas is weighed at 28.4 g. Now we have to tell how many…

Q: 3.112 The carat is the unit of mass used by jewelers. One caratis exactly 200 mg. How many carbon…

A: One carat is equal to 200 mg. the amount of diamond is 2 carat. The mass of diamond from carat to g…

Q: How many atoms in total are there in one molecule of Mg(NO3)2?

A: In a molecular formula, symbols of all the constituting atoms are shown along with their numbers in…

Q: Molecules of vitamin C contain 6 carbon atoms, 8 hydrogen atoms, and 6 oxygen atoms. What are the…

A: Given :-  Molecules of Vitamin c contain 6 carbon atoms, 8 hydrogen atoms and 6 oxygen atoms  To be…

Q: Succinic acid (below) is an important metabolite in biological energy production. Give the molecular…

A: Simple structure of succinic acid is:

Q: A 2.37 g sample of nitrous oxide (an anesthetic sometimes called laughing gas) contains 3.24 x 1044…

A: Given data,  Mass of nitrous oxide = 2.37 g  Contains 3.24 × 1022 N2O molecules

Q: A 3.17 g sample of nitrous oxide (an anesthetic sometimes called laughing gas) contains 4.34 x 1022…

A:

Q: A metal M forms a compound with the formula MCl4. If the compound is 66.14% chlorine by weight, what…

A: The molecular formula of metal chloride is = MCl4 The mass percentage of chlorine is = 66.14 %

Q: Fluoride ion is added to drinking water to prevent tooth decay. What is the mass in grams of sodium…

A: Given Formula units = 1.19 × 1019

Q: 42. Ethanol (C2H50H), a domestically produced fuel source, is often blended with gasoline. A sample…

A: Given mass of Ethanol (C2H5OH) = 45.6g To determine the number of carbon,hydrogen and oxygen atoms…

Q: A mixture consisting only of lithium chloride, LiCl, lithium carbonate, Li2CO3, and lithium nitrate,…

A: Introduction to Elemental Analysis In the process of elemental analysis, a sample of a substance…

Q: What are the masses of the four different BrCl molecules? Express the masses in atomic mass units…

A: Isotopes - Isotopes are two or more atoms having the same atomic number but different mass numbers.…

Q: In using a mass spectrometer, a chemist sees a peak at a mass of 30.0106 AMU. Of the choices 12C2…

A:

Q: If a sample of ethanol has a mass of 1.34 x 104 mg, d) How many C atoms are in the sample? e) How…

A: Stoichiometry involves the calculation of concentration of solutions in the given conditions of…

Q: How many calcium atoms are in 1 g of CaO? O 9.553 x 10-23 O 7.201 x 1023 O 1.074 x 1022 O 1.422 x…

A:

Q: A 2.62 g sample of nitrous oxide (an anesthetic sometimes called laughing gas) contains 3.59 x 1022…

A: Given  (a)   Mass = 2.62 gram       Number of molecule of N2O  =  3.59 × 1022 molecule       Number…

Q: 2) sodium bicarbonate (s) → sodium oxide (s) + carbon dioxide (g) +

A: We have to tell which product is formed from thermal decomposition of sodium bicarbonate

Q: Iron is found in Earth's crust as seve pounds. Calculate the mass (in kg) c contains 1.0 X 10° kg of…

A: Molecular-Mass: Molecular mass is the sum of atomic masses of the elements present in a molecule. It…

Q: O 4.29 x 10 10 g What is the mass of 4.63 x 1012 atoms of Fe? O 1.08 x 10 10g O 9.76 x 10 10 4.29 x…

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Q: A sample of phosphorus weighs 3.8 x 103 ng.  How many phosphorus atoms are present in this sampme?…

A:

Q: Balance the following chemical reaction. Enter the sum of the balanced coefficients as your answer.…

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Q: Sucrose Sugar C12H22O11 Heptane One of several components in gasoline C5H12 Sulfuric…

A:

Q: A 3.48 g sample of nitrous oxide (an anesthetic sometimes called laughing gas) contains 4.76 x 1022…

A:

Q: What is the total number of oxygen atoms on the right-hand side of this chemical equation? 2 Caz…

A: Given :- 2Ca2(PO4)2(s) + 4SiO2(s) + 12C(s) → 4CaSiO3(s) + P4(s) + 12CO(g)  To determine :- total…

Q: A sample of C,H, has 9.28 x 1024 H atoms. How many carbon atoms does the sample contain? number of…

A: Interpretation-  To determine the carbon atom in the give molecule C3H8 - To determine the total…

Q: %3D The mass of 2.21 x 1040 atoms of iron (molar mass = 55.845 g/mol) is O 2.78 x 104 g. 2.05 x 102g…

A:

Q: What is the mass, in grams, of 1.67 x 10^15atoms of Mn

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Q: What is the mass of 4.63 x 1012 atoms of Fe? 9.76 x 10-10 g O 1.62 x 10 10g O 1.08 x 10-10 g O 2.73…

A:

Q: If green spheres represent chlorine atoms, yellow-green spheres represent fluorine atoms, white…

A: We are given that, Green spheres represent chlorine atoms. yellow-green spheres represent fluorine…

Q: the mass ( in g) of 1.2 x 10^24 atoms of molybdenum, Mo.

A: A mole refers to the amount of discrete entities (atoms, molecules, particles ) present in a…

Q: The reaction between methanol and oxygen gas produces water vapor and carbon dioxide. 2 CH,OH(1) + 3…

A: From the reaction it is clear that 2 moles methanol and 3 moles oxygen reacts to give 4 moles water…

Q: How many moles of C,H, contain 4.96 x 10 24 hydrogen atoms?

A: The number of moles of C3H8 required can be calculated by using the unitary method. C3H8 (propane)…

Q: Explain how the atomic mass unit (amu) is defined and explain how the definition of an amu, in turn,…

A: Avogadro's number is equal to 6.0221 x 1023 number of anything is equal to 1 mole of that thing.

Q: 4. The mass of silicon atoms is * no. of Si atoms 1.63x102 atom [Avogadro's = O 1.04 x 10 g O 4.58 x…

A: Given,  Number of Si atoms =   1.63 x 1021 atoms  Calculate the mass of Si atoms = ?  Options are :…

Q: formula units

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Q: What is the mass of 8 atoms of copper in grams? 8.44 x 10-22 g 1.33 × 10-23 g X 508 g 7.58 x 1022 g…

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Q: If the mass of a pure silver (Ag) coin is 15 g, then how many Ag atoms are present in this coin?

A:

Q: A metal (M) forms a compound with the formula MCl3. If the compound contains 65.57 % Cl by mass,…

A: Assume 100 g of the compound is present. This turns percent into mass.Given 65.67 % of chlorine by…

Q: TRUE or FALSE A mole is the amount of a substance that contains as many elemental entities as…

A: Ans. TRUE The value of the mole is equal to the number of atoms in exactly 12 grams of pure…

Q: A 3.69 g sample of nitrous oxide (an anesthetic sometimes called laughing gas) contains 5.05 x 1022…

A: a.The total number of nitrogen atoms in 3.69g sample of nitrous oxide is calculated as,

Mole Concept

Mole concept is a method to determine the amount of any substance that consists of some elemental particles using a grouping unit called ‘mole’. The mole concept enables one to handle the large amount of small elementary particles. The mole concept can be used in many calculations related to mole calculation, molar amount, mole ratio, and so on, which are significant in chemistry.