1. A prospector panning for gold in a river collects 15.00 g of pure gold. How many Au atoms are in this quantity of gold? 2. How many moles of sucrose, C12H22O11, are in a 25-g sample of sucrose? 3. What is the mass of 0.443 mol of hydrazine, N2H4?

Q: 1no What is the maximum mass of Al,(SO,), which could be formed from the reaction of 3.6×1023 atoms…

A: According to the mole concept, 1 mole of an element contains 6.022 × 1023 number of atoms.…

Q: Magnesium hydroxide (Mg(OH) 2), as "Milk of Magnesia" can be used to neutralize excess stomach acid,…

A:

Q: A sample is found to contain 0.650 mole of a chemical substance. a. How many atoms are present if…

A:

Q: 1. Consider the given for nos. 1 to 4: 6 Li(s) + N2(g) →2 LiŞN(s) Determine: _1) the mass of N2…

A: Hello. Since the question contains multiple subparts, the first three subparts are solved. In case…

Q: U + 3 Br2 →  UBr6            What is my actual yield of uranium hexabromide if I start with 100…

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Q: 1.) Iron (II) sulfate, FeSO4, is prescribed for the treatment of anemia. a.) How many moles of…

A: Mole is defined as the ratio of given mass and molar mass. The unit of mole is mol. It is utilized…

Q: What is the maximum mass of B4C that can be formed from 2.00 moles of boron(III) oxide?

A: Boron(III) oxide is B2O3 B4C can be prepared by the reaction B2O3 with carbon. The chemical reaction…

Q: 1 Bao + 1 H50, → 1 Bas0, + 1 H,0 3. (a) What mass of BaSO, can be formed from 196.0 g of H,SO,?

A: Use the stoichiometric calculations as shown below:

Q: A: What is the correct chemical formula when Co4+ combines with S2- ?  B:  How many ATOMS of OXYGEN…

A: A: What is the correct chemical formula when Co4+ combines with S2-?

Q: 6Li + N2 --> 2Li3N If 50 g Li reacts with 40 g N2, what is the maximum mass of lithium nitride…

A:

Q: What mass of iodine monofluoride must be used to produce 30.0 g of nitrogen triiodide?

A: Given data,Mass of NI3=30gBalanced reaction for the preparation of NI3 from IF6IF+N2→2NI3+3F2

Q: b. CFBRO, molar mass is 509.6 g/mol C. C2OH4, molar mass is 88.1 g/mol

A: Molecular formula = (empirical formula)n  n = molar mass/empirical formula mass

Q: What is the molar mass of sodium carbonate?

A: chemical formula of sodium carbonate is Na2CO3

Q: When the substance shown below burns in oxygen, the products are carbon dioxide and water. How many…

A:

Q: K(s) + + (6)1) (soD + (6)o a How many moles of KCIO, can be made from 89 moles of 0,? b. If you have…

A: The balanced reaction is: 2 K(s) + Cl2 (g) + 3O2 (g) → 2KClO3 (s)

Q: 1) How many atoms does each molecule of H,SO, has? A) 8 B) 6 C) 7 2) A compound of carbon and…

A: we have to tell which option is correct from given choices of options by telling  number of atoms in…

Q: Consider a sample containing 0.750 mol0.750 mol of a substance. How many atoms are in the sample if…

A: The number 6.022 × 1023 indicates the number of atoms or molecules in a mole of any substance is…

Q: 3A + 5 B →2C+ 4D How many moles of D will be made when 21 moles of A is completely reacted with…

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Q: Consider the balanced reaction of magnesium and oxygen. 2 Mg + O2 2 MgO What mass, in grams, of MgO…

A: The given chemical reaction between magnesium and oxygen isas follows,  2Mg +O2 →2MgOamount of Mg…

Q: Molar mass is defined as: a. the mass of one mole of a substance in grams. b. the mass of one gram…

A: option a

Q: Gold (Au) has been used to make ornamental objects and jewelry for thousande sf years. Gold nuggets…

A: Since you have posted multiple questions, we are entitled to answer the first only. 1) Given: Mass…

Q: Which one of the following is not equivalent to one mol of the substance? O 8.0 g He O 6.02 x 1023 C…

A: The correct option is:

Q: How many lithium atoms are contained in 5.5 moles of lithium? The molar mass of lithium is 6.941…

A: Since number of atoms = moles X Avogadro's number And Avogadro's number = 6.022 X 1023  Moles given…

Q: B) Consider the reaction of: CH, + Br, → CH,Br + HBr What is the theoretical yield of CaH;Br if 42.1…

A: Given Chemical Reaction is -  C6H6 + Br2 --------> C6H5Br + HBr    The mass of Reactants are -…

Q: Bi₂S₃ + 3Fe → 2Bi + 3FeS If 5.76 ×10²³ atoms of iron (Fe) react with excess Bi₂S₃, what mass of Bi…

A:

Q: 4) Ozone, O3, is a product in automobile exhaust by the equation NO2(g) + O2(g) → NO(g) + O3(9).…

A: Since you have posted multiple questions, we are entitled to answer the first only. Please repost…

Q: 1. Gold (Au) has been used to make ornamental objects and jewelry for thousands of years. Gold…

A: Please note- As per our company guidelines we are supposed to answer only one question. Kindly…

Q: Ethanol has a molecular formula of CH3CH2OH. 1.) What is the molar mass of ethanol? 2.) What is the…

A: 1) molar mass = sum of atomic mass of each atom present  in the molecule  Since in ethanol we have 2…

Q: The winds in a hurricane can travel as high as 200.0 miles per hour. What is this speed in meters…

A:

Q: 8.00 g of a certain Compound X, known to be made of carbon, hydrogen and perhaps oxygen, and to have…

A: Given :  Mass of compound = 8.00 g  Molar mass of X = 138. g/mol  Mass of CO2 formed = 17.86 g  Mass…

Q: How many hydrogen atoms are in 1.0 G sample of acetic acid, CH3COOH? The molar mass of acetic acid…

A: Mass= 1gm Molar mass=60g/mol

Q: Which one of the following is not equivalent to one mol of the substance? O 65.39 g Zn O 14.01 g N O…

A: Given: To identify which option is not equivalent to 1 mole.

Q: 3) Consider the balanced equation: 2Al + Fe;N2 2AIN +3Fe. If 5.23 g AIN were produced in this…

A:

Q: 2. The reaction of calcium hydride with water can be used to prepare small quantities of hydrogen…

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Q: Consider a sample containing 0.750 mol of a substance. How many atoms are in the sample if the…

A: The number of lead atoms in 0.750 mol of a sample is calculated as, The number of platinum atoms in…

Q: The molar mass of the hydrocarbon is 86.17 g/mol. What is its molecular formula? A CH0 В CH 26 ©…

A:

Q: A 52-kg woman has 7.2 x 10 mol of hemoglobin (molar mass = 64456 g/mol ) in her blood. How many…

A: We know that 1 mole of any substance contains Avogadro number of molecules i.e 6.022 ×1023…

Q: A Freon™ leak in the air conditioning system of an old car releases 25g of CF2Cl2 per month. What…

A: 25 g of CF2Cl2 is released by an old car air conditioning system per month.

Q: The molecular formula of aspartame is C14H18N2O5 a. What is the molar mass of aspartame? b. How many…

A:

Q: How many atoms of Pc are in 5.7 g of a hypothetical compound, Aa2Bb6PC4 which has a molar mass of…

A: Number of atoms can be calculated from the moles of compound.

Q: One of the most widespread environmental carcinogens (cancer-causing agents) is benzo[a]pyrene…

A: Given, C present in 95.21% H present in 4.79%.  At first we need to find the empirical formula and…

Q: Which one of the following is not equivalent to one mol of the substance? O 65.39 g Zn O 55.85 g Fe…

A:

Q: Elements B and N form a binary compound BxNy. When 12 grams of this compound was made from its…

A: Empirical formula of a compound is the simplest positive integer ration of atoms present in the…

Q: 3. Elements B and N form a binary compound BNy When 12 grams of this compound was made from its…

A: Mass of compound = 12 g  Mass of nitrogen = 7 g  We need to determine formula of compound.

Q: TCDD, also called dioxin (C 12H 4Cl 4O 2, molar mass 322.0 g/mol), is a potent poison. The average…

A: The dose of TCDD which is lethal for a individual can be calculated by multiplying the mass of the…

Q: Assuming the reaction goes to completion, how many moles of strontium fluoride should we expect to…

A: Given: Sr(NO3)2 + 2NaF → 2NaNO3 + SrF2 Concentration of: Sr(NO3)2 = 3.016M NaF = 3.644 M Volume of…

Q: During an experiment, 4.95 g of gaseous ammonia reacts with 3.25 g of sulfuric acid which produced…

A: Interpretation: During an experiment, 4.95 g of g of gaseous ammonia reacts with 3.25 g of sulfuric…

Q: Suppose 8.60 g of CH4CH4 is allowed to burn in the presence of 17.00 g of oxygen. How much (in…

A: Given that 8.60 g of methane reacts with oxygen to form carbondioxide and water . Number of moles of…

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.