1. The density of toluene is 0.866 g/mL.  Calculate the mass in pounds that would fill a 12.0 gallon tank.  (1 lb = 0.4536kg, 3.786 L= 1 gal) Group of answer choices 112 lb 1,790 lb 116 lb 86.7 lb

Q: How many molecules are equal to 2.25 moles of sulfur dioxide? Round to two decimal places.  _ x…

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Q: A student prepares aspirin using 2.56 grams of salicylic acid (MW = 138 g/mol) and 4.85 mL of acetic…

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Q: question 4

A: Given information:Number of moles of CO(g) = 1.0 moleNumber of moles of CO2(g) = 1.0 mole

Q: 10. Make the following conversions: (a) 28.4 g S to moles S (b) 2.50 kg Nacl to moles Nacl (c) 42.2…

A: Number of moles = mass ÷ molar mass

Q: A sample of propane, C3H8, contains 15.0 molesmoles of carbon atoms. How many total moles of atoms…

A: Provided molecular formula of compound (propane)= C3H8  Provided moles of carbon atoms=15 moles.…

Q: What mass of SbF3 (179g x mol^-1) is needed to produce 1.00 g of Freon-12, CCl2F2 (molar mass =121 g…

A: We have chemical balanced equation of Freon-12 from SbF3 . We have to calculate the amount of SbF3…

Q: Given 0.680 moles of Ca(NO3)2; calculate the formula units of Ca(NO3)2 in this amount.…

A: Given Moles of  Ca(NO3)2  = 0.680 moles

Q: Which of the following pairs of compounds have the same empirical formula? a. acetylene, C2H2, and…

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Q: Calculations Using the Mole Learning Goal: 2.32x1023 13C atoms To learn how to convert grams to…

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Q: Show all steps in the answers for the following questions and use significant figures in the…

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Q: An organic compound consists of carbon, hydrogen and sulfur only. The percentage of carbon by mass…

A: For calculation of Molecular formula, first of all we calculate the % of each atom , empirical…

Q: Data Table 1. Moles and Atoms in Common Items Item Aluminum Cup Glass Stirring Rod Cotton Ball A.…

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Q: 4. The empirical formula of a compound is CH20. What could its molecular formula be? hat could its…

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Q: mass of empty cruciole = 31.06ua. mass of Crucible+ Mg= 31.034 t0.001 1) Determine the empirical…

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Q: A beaker contains 48.948.9 mL of carbon tetrachloride (CCl4CCl4, density is 1.591.59 g/mL).…

A: Volume of carbon tetrachloride = 48.9 mL  Density = 1.59 g/mL  Density = mass ÷ volume

Q: 10. Make the following conversions: (a) 28.4 g S to moles S (b) 2.50 kg NaCl to moles NaCl (c) 42.2…

A: (a) Mass  of S = 28.4 g Molar mass of S = 32.06 g/mol Moles of S = mass of Smolar mass of S  = 28.4…

Q: 2. A compound composed of carbon and hydrogen with the formula CxHy was burned. The balanced…

A: • Since, in the given chemical equation we have to calculate the number of carbon and hydrogen in…

Q: 0.5998 -g sample of a new compound has been analyzed and found to contain the following masses of…

A: The question is based on elemental analysis. we have been given mass of the elements. We have to…

Q: Calculate the moles of glucose in 1.0253 g of glucose, C6H12O6. Then calculate the moles of each…

A: Given :-  Mass of glucose = 1.0253 g  To calculate :-  Number of moles of glucose and also determine…

Q: Show all steps in the answers for the following questions and use significant figures in the…

A: * Moles = Mass / molar mass  * 1 mol = 6.022 × 10²³ atoms or molecules * Molar mass of Carbon = 12…

Q: How many atoms are in 1.50 moles of helium (He)?   a 2.50 x 1022 atoms He  b 9.03 x 1023 He atoms…

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Q: 1 mole of 63Cu atoms has a mass of about 63 grams. Explain why the number below Cu on the periodic…

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Q: Please assist with number 2

A: The number of moles of sodium atom can be calculated as given below.

Q: If you calculated the molar mass of your unknown liquid to be 70.1 g/mol, which of the following do…

A: Given-> Calculated molar mass of unknown liquid =70.1 gm/mole.

Q: 4. Calculate the mass of 2.5 x 10^23 formula units of magnesium phosphate. 5. Calculate the number…

A: [4.] 1 mole of Mg3(PO4)2 contains 6.022 × 1023 molecules. So,  2.5 × 1023 molecules will contains  =…

Q: A 1.000 g sample of an unknown compound containing only carbon, hydrogen, and oxygen was analyzed…

A: Given: Compound contains only C, H and O. Mass of compound combusted = 1.000 g. Mass of CO2 produced…

Q: A sample of NH3 has a mass of 84.06 grams.   Calculate the moles of NH3 in the sample.…

A: Given : Mass of NH3 = 84.06 g

Q: A 1.000 g sample of an unknown compound containing only carbon, hydrogen, and oxygen was analyzed…

A: Given: Mass of unknown compound = 1.000 g CO2 formed = 2.224 g H2O formed = 0.3035 g Known: Molar…

Q: A 1.67 mg sample of a compound containing carbon, hydrogen, and oxygen underwent combustion…

A: Hi there, as there are multiple questions posted. We are answering the first question. If you need…

Q: A chemist decomposes samples of several compounds; the masses of their constituent elements are…

A: The mass of constituents are , Na= 10.838 g, S = 7.557 g, O = 15.107 g, Molar masses are, Na=…

Q: Which of the following is not true for 1 mole of the compound (CH3)2O?          a.     It contains…

A: 1 mole of a molecular/atomic substance is that amount of the substance which has 6.022×1023…

Q: osmium by mass. a) If you assume 100.0 g of the compound, what is the mass in grams of osmium that…

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

Q: Consider the following chemical reaction:            CH4   +    2O2   ------------------>    CO2…

A: The considered reaction is, CH4 + 2 O2→CO2 + 2 H2O

Q: The compound known as butylated hydroxytoluene, abbreviated as BHT, contains carbon, hydrogen, and…

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Q: sample of 2 tsp of sugar (C12H22O11) weighs 9.00 g. a. Record each step needed to calculate the…

A: We have given that  A sample of 2 tsp of sugar (C12H22O11) weighs 9.00 g  calculate the moles and…

Q: Polymers are large molecules composed of simple units repeated many times. Thus, they often have…

A: Since we only answer up to 3 sub-parts, we’ll answer the first 3. Please resubmit the question and…

Q: Caffeine (MM = 194.2 g/mol) is a small molecule that many people ingest for its stimulant effects.…

A: Given molar mass of caffeine = 194.2 g/mol percentages C = 49.5℅ N = 28.9℅ H = 5.19℅ O = 16.5 ℅

Q: Chemistry a student was given a sample of CaCO3 * XH2O to find the empirical formula. she measured…

A: CaCO3 .xH2O  upon heating  will lose its water and this a given sample will lose some of its mass…

Q: You analyze a sample of a compound you made in the lab and find that it has a percent composition by…

A: Answer: Empirical formula is C4H2O and three answers from the  given list are C4, H2, and O.

Q: Consider the following chemical reaction. 3 Zn(C₂H₃O₂)₂(aq) + 2 Na₃PO₄(aq) → 6 NaC₂H₃O₂(aq) +…

A: The formula weight (FW) of a compound is calculated using the following expression: FW=∑ni×Mi where…

Q: How many moles are equal to 1.20 x 1024 atoms of sulfur (S)? Round to 2 decimal places.   a 0.20  b…

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Q: Calculate the number of moles in each sample. 74.9 g HCCl3 Express your answer with the…

A: Given samples,    74.9 g HCCl3    10.7 g C6H12O6    28.4 kg C2H4    22.6 g of dinitrogen monoxide

Q: Number of atoms of C in 10 moles of C4H10 are:     240.88x10^23 24.09x10^23 4.15x10^23…

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Q: A compound is composed of elements C, H, and N. A 12.075-mg sample of the unknown compound was…

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Q: 1. How many moles are in each of the given samples? a) 2.50 mL of water (assume density of water is…

A: Note : As per our guidelines we are supposed to answer first 3 parts .please resubmit the other…

Q: An aspirin tablet contains 0.325g of C9H8O4. A) How many molecules of C9H8O4 does it contain? B)…

A: Given: Mass of C9H8O4 = 0.325 g.

Q: If 0.537 g of copper completely reacts with 0.321 g of fluorine to form a compound, what is the…

A: Since you have asked multiple question, we will solve the first question for you.If you want any…

Q: The empirical formula for the following sugar, C11H22O11 can be expressed as A. CH2O B. CHO C.…

A: Given  Molecular formula for C11H22O11

Q: Convert 1.43 x 10^23 molecules/formula units of X5Z3 into grams of the same compound. (Assume that…

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Q: Consider the following definitions. 1 doz = 12 1 gross = 144 1 ream = 500 1 molmol =…

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

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.