A 3.87g sample of nitrous oxide (an anesthetic sometimes called laughing gas) contains 5.30x1022 N2O molecules.  a) How many nitrogen atoms are in this sample?  b) How many nitrogen atoms are in 2.97 g of nitrous oxide?

Q: How many kilograms of NaCl contain 3.49 x 10 ions? There are 2 moles of ions per mole of NaCl, and 1…

A: Given  number of ions of NaCl= 3.49 x 1025 ions molar mass of NaCl = 58.5 g/mol 1 mole  = 6.022 x…

Q: What is the mass grams that are in 6.70 x 1025 molecules of 1,?

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Q: Chemical analyses conducted by the first Mars Rover robotic vehicle in its 1997 mission collected…

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Q: i. How many atoms of oxygen are in 8.1 g CO,? j. How many atoms of hydrogen are in 5.0 g NH3?

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Q: The density of Bi at 25 °C is 9.808 g>cm3. How many Bi atoms are present in a cube of the element…

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Q: A) What is the formula of magnesium melonite dihydrate?  B) What is the mass % of melon in copper…

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Q: element b forms a chloride BCl3 containing 46.62% chlorine by mass. what is the identity of this…

A: Consider the molecular mass of the compound BCl3 which is formed by the combination of an unknown…

Q: 4 C3H;N3OS(1) → 12 CO2(g) + 6 N2(g) + O2(g) + 10 H20(g) a. How many oxygen atoms are present in a…

A: Number of moles = mass/molar mass  Mass = moles × molar mass  Density = mass/volume  Mass = density…

Q: 4.104. When 2.750 g of the oxide Pbạ O4 is heated to a high temperature, it decomposes to produce…

A: Pb3O4     ------>     O2   +  PbxOy Mass of Pb3O4 = 2.750 g  Molar mass of Pb3O4 =  685.6 g/mol…

Q: Which of the following has more atoms: 3.55 g ef lithium atoms or 19.1 g of nickel atoms?

A: Mass of lithium = 3.58 g Mass of nickel = 19.1 g

Q: 2. How many H atoms are in 72.5 g of isopropanol (rubbing alcohol), C3H8O?

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Q: What is the mass of the compound C8H18 (Mm = 114.26 g.mol-1) that contains 7.20x1022 hydrogen atoms?

A: Given :- molar mass of C8H18 = 114.26 g.mol-1  Number of H atoms = 7.20 × 1022 atoms   To calculate…

Q: how many atoms of carbon are in a 312.5 mg sample of C^3H^8?

A: Avogadro's number gives the number of atom or particle present in 1 mole of any substance.

Q: Consider a sample of calcium carbonate in the form of a cubemeasuring 2.005 in. on each edge. If the…

A: Given: Edge length of the cube(Calcium carbonate) =2.005 inch Density of sample= 2.71 g/cm3 To…

Q: Diamond is one form of an elemental carbon. An engagement ring contains a diamond weighing 1.25…

A: Given, Diamond is one form of an elemental carbon and an engagementring contains a diamond weighing…

Q: The fuel used in many disposable lighters is liquid butane, C4H10. How many carbon atoms are in 1.50…

A: The value is given as follows:

Q: A sample of sodium sulfite (N a 2 S O 3 ) has a mass of 2.25 g.a. How many N a + ions are present?b.…

A: Given that mass of Na2SO4 = 2.25g Molar mass of Na2SO4 is given by:     Molar mass of Na2SO4 =…

Q: Diamond is one form of elemental carbon. An engagement ring contains a diamond weighing 1.25 carats…

A: The mass of 1.0 g is equal to 1000 mg. The mass of diamond in g is calculated as shown below.

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: A sample of the male sex hormone testosterone, C19H28O2, contains 3.58×1021 atoms of hydrogen. How…

A: Given,Testosterone contains 3.58×1021 atoms of hydrogen.

Q: Question attached

A: Number of moles of the substance is equal to the ratio of mass to the molar mass of the substance.…

Q: 2. The volume of the nucleus of a carbon atom is about 9.9 x 10-39 mL. The molar mass of carbon is…

A: Given: Volume of carbon nucleus atom = 9.9 × 10-39 mL. And molar mass of a carbon atom = 12.00…

Q: Find the total number of atoms in a sample of cocaine hydrochloride, C17 H22 CINO4, of mass 24.0 mg…

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Q: A sample of hydrogen has a mass of 40.2 grams.  How many H atoms are there in the sample?   How…

A: Given that,mass of hydrogen = 40.2 gMolar mass of hydrogen = 2.016g/molmoles of hydrogen = mass of…

Q: A sugar crystal contains approximately 2.1x10^17 sucrose (C12H22O11) molecules. What is it’s mass in…

A: The molar mass of the sucrose (C12H22O11) is 342 g/mol.The number of moles of sucrose can be…

Q: A sample of glucose, C6H12O6, contains 1.240×1021 carbon atoms. Part A: How many atoms of hydrogen…

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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: The empirical formula for Antifreeze is CH,O. What would be the molecular formula if the mass of…

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Q: 2. A given sample of caffeine, C,II,N,0, has 0.23 g of carbon atoms in it. Hle nitrogen atoms are…

A: Mass of C atom = 2.3 g  Molar mass(MM) of C = 12 g/mol Moles of C = mass/MM          = 2.3/12   =…

Q: How many H atoms are there in (3.80x10^2) grams of H2O?

A: Number of moles = Mass/Molar mass Number of atoms in 1 mole = 6.0224 x 1023 Molar mass of water =…

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

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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: 1) How many moles of cobalt (Co) atoms are there in 6.00 X 10 (6 billion) Co atoms? 2) How

A: We know, 1 mols = 6.022x1023 atoms

Q: In 6.9 g of aluminum, there are ______ x 1023 aluminum atoms present

A: Molecular mass of atom contains 6.023 × 10^23 atoms. Molar mass of aluminium is 26.981 g/mol

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

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Q: 1. An essay written by carbon pencil on a paper weighs 0.5 mg. How many carbon atoms present in the…

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Q: A sample of the male sex hormone testosterone, C19H28O2,contains 3.88 x 1021 hydrogen atoms. (a) How…

A: Atoms and molecules amount is calculated with the help of mole concept. A mole is defined as amount…

Q: How many moles would 1.00 x 1023 molecules of methane ( CH4 ) represent? How many Sulfur atoms would…

A: According to avogadro's rule number of molecule present in 1 mole of substance is 6.022×1023, and…

Q: 2. A hydrocarbon was found to be 20% hydrogen by mass. If the molar mass is 30 g/mol, what is the…

A: Note : As per our guidelines we are supposed to answer first question. Please repost the other…

Q: Monel metal is a corrosion-resistant copper-nickel alloy used in the electronics industry. A…

A: Given data is: Length of plate = 15.0 cm Width of the plate = 12.5 cm Thickness of plate = 3.00 mm…

Q: 2.845 x 1012 potassium ions equals how many moles of potassium ions?

A: 1 mol of potassium ions equal 6.022 ×1023ions    16.022×1023moles of potassium ions equal 1 ion

Q: Dic orodifluoromethane (CF2C12) is an Ozone-depleting substance. It belongs to a class of compounds…

A: Given that, 10.0 g of CF2Cl2. Also, the atomic weights are  C = 12.01, F = 19.0, Cl = 35.45. The…

Q: A sample of glucose, C6H12O6, contains 1.250 * 1021 carbonatoms. (a) How many atoms of hydrogen does…

A: 1 molecule of glucose contains 6 atoms of C, 12 atoms of H and 6 atoms of O.  Molar mass of glucose…

Q: Dichlorobenzene has a molecular formula of C6H4Cl2 (MW=147.00 g/mole).      What mass of…

A: Given, dichlorobenzene 1.81x1024 total atoms

Q: 1. What is the percent, by mass, of chromium in KCrO4? a. 26,776 % b. 31.763 % c. 40.268 % d. 42.241…

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Q: How many hydrogen atoms are in 3.25 g of acetic acid, CH3COOH(I)? a. 3.26 x 1022 b. 6.74 x 1022 C.…

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Q: Boron trifluoride is used as a catalyst in the synthesis of or-ganic compounds. When this compound…

A: When the compound involves boron-11 and fluorine-19 isotope, the molecular mass of the compound is;…

Q: Find the number of P atoms in 0.200 g of P4. (P=30.97) 3.89 x 1021 O 9.70 x 1026 6.02 x 1023 1.12 х…

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Stoichiometry

Stoichiometry is a chemical division that evaluates the quantitative content of the chemical process with the help of the reacting molecules or products taking part in the reaction. The term “stoicheion” in “Stoichiometry”, is an old Greek term for "element" whereas “metron” means "measure".