Do the following calculations involving moles and molar masses: 1.  How many moles of NH3 are there in 5.0 x 1024 molecules of NH3? 2. What is the mass of one molecule of NH3?  (use 3 significant figures and scientific notation and express your answer in grams) 3. How many molecules of NH3 are in 1.0 g of NH3? (use scientific notation and correct number of significant figures for your answer)

Q: If 1.80 g Zn is allowed to react with 1.68 g of CUSO4 according to equation CuSO4 (aq) + Zn(s) →…

A:

Q: mass

A:

Q: Liquid octane (CH₂(CH₂) CH₂ will react with gaseous oxygen (O₂) to produce gaseous carbon dioxide…

A:

Q: Gaseous ethane (CH,CH, will react with gaseous oxygen (0, to produce gaseous carbon dioxide (CO,)…

A: First of all we need to determine the limiting reagent. The reagent which is present in limited…

Q: Liquid hexane CH3CH24CH3 reacts with gaseous oxygen gas O2 to produce gaseous carbon dioxide…

A: Given,1.72 g of hexane reaction with 11.7 g of oxygen gives 1.76 g of water.

Q: A reaction is carried out in the laboratory and the percent yield is calculated to be 67.0%. The…

A:

Q: Dimensional analysis & conversions. If you need scientific notation in you answer, copy this for the…

A: Since, Moles is the ratio of mass to the molar mass of that atom or molecules. thus,

Q: The chemical formula for calcium sulfide is CaS. A chemist determined by measurements that 0.080…

A: Given- Moles of calcium sulfide=0.080 moles CaS Molar mass of CaS=72.14 g/ mol

Q: A chemist adds 110.0 mL of a 1.78 M nickel(II) chloride (NiCl2) solution to a reaction flask.…

A: Molarity of the solution can be calculated by using Following formula - Molarity = mass×1000/molar…

Q: The molar mass of strontium (Sr) is 87.62g/mol. Calculate the number of atoms in a 67.5 mg sample of…

A:

Q: Gaseous ethane (CH3 CH3) will react with gaseous oxygen (O₂) to produce gaseous carbon dioxide (CO₂)…

A: A balanced chemical equation contain equal number of atoms of each elements on both sides of the…

Q: What is the mass in grams of 4.57 × 10²⁵ molecules of Cl₂? I get the write and but the wrong number…

A: Mole concept: The number of molecules in one mole of chlorine is equal to the Avogadro number. The…

Q: Perform each of the following calculations.  You must show your work to receive credit and must must…

A: Number of moles is calculated by dividing the mass with molecular mass.

Q: The average dollar bill is 1.8x107 nm long and weighs 0.987 g.  The distance to the sun is 1.5x108…

A: Mole : Mole is the unit by which we measure the amount of substance. One mole is equal to the number…

Q: A compound contains iron and bromine. A sample of the compound contains 6.371 g of iron and 10.991 g…

A:

Q: Given the balanced chemical reaction below for the combustion of propane (C3H8)   C3H8 (g) + 5 O2…

A: Combustion reaction takes place when there is reaction among the substance and the oxygen from the…

Q: How many grams of hydrogen are in 10.45 moles of C4H8? (The molar mass is not needed for this…

A:

Q: A)  Calculate the molarity 12.21 mg KI in 107.6 mL of solution         Express your answer using…

A: Molarity of a solution is defined as the number of moles of solute to the total volume of solution.

Q: moles

A:

Q: In an experiment a student recovers 6.43 g of dry nickel after dissolving a 5.14 g nickel coin in…

A: Given that,  Weight of dry nickel recovered = 6.43 g Weight of Nickel coin dissolved in nitric acid…

Q: A molecular compound has the following empirical formula:  CH2O.  The molar mass of the empirical…

A:

Q: Using the equation: 2 Al(s) +3 Cu(NO3)2(aq) → 2 Al(NO3)3(aq) + 3 Cu(s) Calculate the mass in grams…

A:

Q: A student sets up the following equation to solve a problem in solution stoichiometry. (The ? stands…

A: We are going to determine the final unit.of this expression.

Q: How many grams of KBr are needed to prepare 300. mL of 0.850 M KBr?

A:

Q: Gaseous methane (CH4) reacts with gaseous oxygen gas (0₂) to produce gaseous carbon dioxide (CO₂)…

A: Given, mass of methane (CH4) = 6.10 g mass of Oxygen gas (O2) = 48.6 g Actual yield of water = 9.73…

Q: Gaseous ethane  CH3CH3  reacts with gaseous oxygen gas  O2  to produce gaseous carbon dioxide…

A: If 8.26g of water is produced from the reaction of 12.6g of ethane and 32.9g of oxygen gas,…

Q: What is the amount of Ne in moles in a 355 gram sample of Ne? (Molar mass of neon = 20.18 g/mol)…

A: Given   mass of Ne            = 355 gram  Molar mass of Ne  = 20.18 gram/mole  Number of mole of Ne…

Q: Gaseous methane (CH4) reacts with gaseous oxygen gas (O2) to produce gaseous carbon dioxide (CO2)…

A: The balanced chemical reaction is written below.CH4 (g) + 2O2 (g) → CO2 (g) +  2H2O (g)According to…

Q: This is the chemical formula for methyl tert-butyl ether (the clean-fuel gasoline additive MTBE):…

A:

Q: A chemist adds 1.10 L of a 0.35M aluminum chloride (AICI,) solution to a reaction flask. Calculate…

A:

Q: Keeping track of units during conversions can get confusing. Therefore, a good strategy is to use…

A: We will use conversion factor to convert each term in question.

Q: Gaseous butane (CH3(CH,) CH, will react with gaseous oxygen (0,) to produce gaseous carbon dioxide…

A: Given data is as follows: The mass of butane = 46 g The mass of oxygen =48.3 g The maximum mass of…

Q: 15.0 g of nitrogen monoxide  n(nitrogen monoxide) = __ mol

A: Mole concept.

Q: Calcium metal reacts with phosphoric acid. What mass of precipitate is produced when 29.3 g of…

A: Given data,Mass of Ca=29.3g A balanced chemical equation can be defined as the equation in which the…