Which of the following does NOT describe 44.0 g of propane, C3H8? a) the amount of propane that contains 8.0 g of hydrogen b)the amount of propane that contains 8 x 6.02 x 1023 hydrogen atoms c) the amount of propane that contains 36.0 g of carbon d) 44.0 x 6.02 x 1023 molecules of propane

Q: Which of the following is equal to exactly Avogadro's number of atoms? 8.00 grams of oxygen 36.00…

A: To find which of the following is equal to exactly Avogadro’s number of atoms. 8.00 grams of oxygen…

Q: A student is running an experiment in which 51.7 grams of BeSO4 is needed, but the only jar of…

A: In the lab the beryllium sulfate present at beryllium sulfate tetrahydrate. The mass of BeSO4 needed…

Q: A.How many moles of boron trichloride are present in 1.03 x 10^23 molecules of this compound? B.How…

A: Mole concept: The number of molecules or atoms present in the one mole of the substance is equal to…

Q: How many MOLECULES of dinitrogen monoxide are present in 4.00 grams of this compound? How many…

A: Given, a) mass of dinitrogen monoxide (N2O) = 4.00 grams Number of molecules of dinitrogen monoxide…

Q: 48. How many molecules of caffeine, C4HSN2O, are there in 18 g of caffeine? a. 1.12 ×10E23 b. 1.05…

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Q: a) How many grams of carbon are in 34 g of C3H8 propane? b) How many grams of hydrogen are in 0.254…

A: According to the mole concept, in terms of mass, the amount of substance in moles is equal to the…

Q: There has been increased evidence that human activities are causing changes in Earth's atmospheric…

A: The mass of oxygen used = 1.0 g. The molar mass of Oxygen = 16 g/mol.

Q: The molar mass of an alkene is 112.23 g/mol and empirical formula of the alkene is CH2. What is the…

A: The concept used to solve this question is to calculate the molecular formula using the molar mass…

Q: How many bromine atoms are present in 35.2 g of CH2B12?

A: Formula to calculate the number of atoms is as follows:- Number of atoms=Number of molecules×Number…

Q: A compound was found to contain 115.49g of Ca, 92.16 g of O, and 5.82 g of H. What is the total mass…

A: mass of Ca = 115.49g mass of O = 92.16 g mass of H =  5.82 g  Molar mass of Ca = 40.078 g/molMolar…

Q: How many GRAMS of sulfur hexafluoride are present in 9.83×1022 molecules of this compound ?

A: Given : Compound is sulfur hexafluoride i.e SF6. And number of molecules of SF6 = 9.83 X 1022…

Q: How many grams of CO2 are formed from the combustion of 129 g methane?

A: The above question can be solved by using stoichiometric calculations.

Q: Please solve a, b, c thank you

A: Lead(IV) selenite is Pb(SeO3)2  Molar mass of compound = 461.2 gm/mol  Mass of compound = 12.47 gm

Q: 3. A sample of sugar, C.H12O6, has a mass of 90.0 g. It has the same number of molecules as A) 45 g…

A:

Q: 2NaCl + 1 Br2 → 2 NaBr + 1 Cl2     How many moles of NaCl are there in 99 grams of NaCl?  If you…

A: a) Given, Given mass of NaCl = 99 grams b) Given, Amount of NaCl is 31 grams c) Given, Amount of…

Q: Calculate the number of moles of propane molecules, C3H8 C 3 H 8 , present in a sample containing…

A:

Q: A compound is found to consist of 1.37g of iron and 2.62g of chlorine. What is the percent by mass…

A: Given that: mass of iron = 1.37 g mass of chlorine =  2.62 g  To find: the percent by mass of…

Q: Which one of the following statements about the compound C3H4 is CORRECT? Oa. Five molecules of C3H4…

A:

Q: A tablet of Tylenol has a mass of 0.611g. It contains 251mg of its active ingredient, acetaminophen,…

A: Mass percent of acetaminophen is equal to the mass of acetaminophen divided by the mass of tablet…

Q: A sample of C3H8C3H8 has 8.88×1024 H8.88×1024 H atoms. (1) How many carbon atoms does the sample…

A: We have given the sample that contain 8.88×1024 H atoms.   1 Mole of  C3H8≡  3 Mole of Carbon   and…

Q: What is the mass of carbon present in 0.196 grams of propane (C3H8)?

A:

Q: Which of the following items has the greatest number of carbon atoms? A. 2.71 x1022 molecules of…

A: Calculate in which one having greatest number of carbon atom ?

Q: What is the mass of one mole of ethyl alcohol

A: Mole is defined as a) Interms of particles :       1 mol = 6.022 x1023 particles/entities  Where…

Q: What is the mass of bromine in a smaple of tribromobenzene, C6H3Br3 , that alos contains 4.987grams…

A: Molar mass of Carbon= 12 g/mol Mass of Bromine = 80 g/mol Total mass of Carbon in tribromobenzene =…

Q: How much would 2.4 x 1024 molecules of N2O5 weigh?

A: Moles=2.4*10^24/(6.022*10^23) = 4

Q: The mass of 5.20 moles of glucose, C6H12O6 is   1.56 × 10‑21 g   31.2 g…

A: Given, Moles of glucose (C6H12O6) = 5.20 mol Mass of glucose (C6H12O6) = ? Note; Molar mass of…

Q: natural product has the molecular formula C25H34O4. What is the mass of 3.31×108 molecules of this…

A: Molecular weight of the compound is  =(12×25)+(34×1)+(16×4) =398 g/mol Where Atomic mass of C ,H And…

Q: Which of the following is equal to exactly 1 mole of atoms?     6.00 grams of carbon     31.93…

A: According to the mole concept , a mole is a measurement unit of any Substance in which particular…

Q: contains 2.3 g of iron?

A: Mass can be defined as the quantity of matter present in a matter. The matter may be liquid, solid,…

Q: Using your answers from above calculate the number of grams of these elements. Hydrogen in 124 g of…

A:

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: 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: The average nicotine (C10H14N2) content of a Camel cigarette is 1.93 mg. Suppose an individual…

A: The average nicotine (C10H14N2) content of a Camel cigarette is 1.93 mg.

Q: What is the mass percent of silicon dioxide (SiO2) if you are able to separate 2.202g out of a…

A: The mass percentage of a compound in a mixture is equal to the ratio of the mass of that compound…

Q: 28) Determine the mass of the following compound: 0.0146 mol KOH A) 56.11 g B) 0.819 g C) 8.19 g 29)…

A:

Q: Arrange the following substances in order of increasing mass percent of carbon.a. caffeine.…

A: The given substances should be arranged in increasing mass percent of carbon. The molar mass of…

Q: How many carbon atoms are in 200 benzene (C6H6) molecules?

A:

Q: 2Na + Cl2 → 2NaCl. If I want to make 100.0 g of salt, how much elemental chlorine would I need?

A: First convert mass into molar mass  Then use mole-mole relationship  After getting mole of  Cl2 then…

Q: Vitamin C has the formula C6H8O6. Calculate the number of vitamin C molecules present in a 0.250-g…

A: Number of moles is given by the ratio of mass of the substance to that of the molecular mass. 1 mole…

Q: Arrange the following substances in order of increasing mass percent of carbon. a. caffeine.…

A:

Q: What mass of ethanol (C2H6O) would contain 7.0 x 1026 atoms of carbon? Group of answer choices…

A: According to the mole concept, 1 mole of every substance contains 6.022×1023 atoms. Here, it is…

Q: Which of the following species is NOT a compound? A. Glucose, C6H12O6 B. Water, H2O C. Methane gas,…

A: Molecule: It is a chemical substance formed by a single atom of the element or by the combination of…

Q: Lighters typically contain butane (C4H10), which has a molar mass of 58.12 g/mol. Consider that…

A: Hydrocarbon  Molar mass  CH4   12 + 4 = 16 C2H6 12×2 + 6 = 30  C3H8…

Q: 1. How many ATOMS of nitrogen are present in 6.28 grams of dinitrogen tetrafluoride ? atoms of…

A: The molecular formula of dinitrogen tetrafluoride is:-  N2F4 Avogadro number is 6.022×1023 The molar…

Q: Part a What mass of compound is present in 5.00 moles of each of the compounds in Exercise 51? Part…

A:

Q: . What is the number of moles of nitrogen if the mass of morphine is ninety-two point four grams? 2.…

A: 1. What is the number of moles of nitrogen if the mass of morphine is ninety-two point four grams?…

Q: examples

A: Carbon based nanomaterials such as fullerene, carbon fibers, carbon nanotubes, nanodiamonds are…

Q: 4. Which of the following is not a correct description of 16.0 grams of methane, CH₂? A. It is one…

A: One mole compound has a mass equal to the molar mass of the compound. 1 mole of substance contain…

Q: A 5.325-g sample of methyl benzoate, a compound used in the manufacture of perfumes, is found to…

A:

Q: What is the mass of 2.00 mol of chlorotrifluoromethane?     52.1 g     209 g     104 g…

A: Given,  Moles of chlorotrifluoromethane = 2.00 mol.  The mass of chlorotrifluoromethane is:

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.