Hexane, C6H14, is known to have a density of 0.655 g/mL at room temperature.  How many moles would be in a 25.2-mL sample of hexane? Is it: 16.5, 38.5, 0.446, 86.2, or 0.191

Q: What is the coefficient in front of the O2 when the equation below is balanced (using only whole…

A: C2H6g+O2g→CO2g+H2Og

Q: Ammonium perchlorate  NH4ClO4  is the solid rocket fuel used by the U.S. Space Shuttle. It reacts…

A: Mole is the amount of the substance that contains the same number of particles or atoms or…

Q: 2Al(s) + 3I2(s) > 2AlI3 How many moles of I2 will be required to make 23.5 moles of AlI3? *Use…

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Q: Given the following equation: 2 C4H10 + 13 O2 + 8 CO2 + 10 H20, show what the following molar ratios…

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Q: 7,(0) Compound X has the following percentage composition by mass: C: 38.9% ; H: 5.4% ; Cl: 38.4%;…

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

Q: What is the coefficient in front of the O2 when the equation below is balanced (using only whole…

A: Balanced equation :-  A chemical equation is said to be balanced if the number of atoms of different…

Q: How many atoms are in 133g of calcium? 133g=

A: Given  Mass of calcium = 133 gram  Molar mass of Calcium = 40 gram/mole Number of atom = ?

Q: A patient is having an allergic reaction and takes a 50.0 mg tablet of the over the counter…

A: The number of moles links the given mass and number of molecules.here moles=given massmolar…

Q: if the average male has a body mass of 70 kg, of which 60% is water, how many moles of water are in…

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Q: t snowed, it melted and now the temperature is going to dip below freezing, to -2.00 °C overnight.…

A:

Q: How to determine the number of moles of the C8H10N4O2, C,H,N,O in 0.1119mg of caffeine C8H10N4O2?…

A: The moles of compound is calculated by the following formula,

Q: Calculate the number of moles of aspirin, C9H8O4, in a 4.0 gram tablet. Group of answer choices…

A: To find the number of moles.

Q: Allyl sulfide C6H10SC6H10S, is the substance that gives garlic, onions, and leeks their…

A: Molecular formula of allyl sulfide = C6H10S Molecular weight of allyl sulfide = (12.01 * 6) + (1.01…

Q: A halothane- oxygen mixture (C2HBrCIF3 + O2) can be used as an anesthetic. Assume that a tank…

A: Given data,P(halothane)=170 torrP(Oxygen)=570torrMass of O2=160g

Q: oluene (MW 92.141, d 0.87) is a chemical solvent. How many moles of toluene are present in 87.9 mL…

A: Given   volume of Toluene = 87.9 mL               density   = 0.87 gram/ mL   Number of mole of…

Q: One of the steps in the commercial process for converting ammonia to nitric acid is the conversion…

A: The balanced reaction between ammonia and O2is as follows, The given grams of NO and H2O are…

Q: Compound "X" has a density of 1.71 g/L at 755 mm Hg and 25 °C. What is the molar mass of  compound…

A: Density = 1.71 g/L Pressure =  755 mm Hg = 0.993 atm  ( 1 atm = 760 mmHg) Temperature = 25 °C =…

Q: What is the empirical formula for C10H2005 ?

A: Empirical formula of a compound = Formula of a compound written with the smallest integer subscript.…

Q: what is the percent by mass of hydrogen in the preservative formaldehyde CH2O 6.713% 53.29%…

A: Given formula is , CH2O Formula mass= 30.026 g/mol

Q: A hydrate [hydrates have the general formula AB • xH2O] is found to have the percent composition: Na…

A: In hydrate Na is 19.17%, C is 10.00%, H is 4.17% and O is 66.6%. In anhydrate Na is 27.38%, C is…

Q: Given the equation: HCO3 (aq)+ H20O= Co3(aq)+ H30 (aq). Identify the C HCO3 H20 Co3 2 H30*

A: Given , chemical reaction : HCO3- + H2O ---> CO32- + H2O

Q: 2 Al(s) + 3 Cl2 (g) 2 AICI:(s) 2 Al(s) + 6 HCI(aq) → 2 AICI3(aq) + 3 H2 (g) AH = -1049 kJ/mole HС()…

A: Bu using Hess law

Q: Complete the calculations in the following table: Mass of Moles of Volume of Volume of Unrounded…

A: The explanation is given below-

Q: Ascorbic acid (C,H306) is also known as Vitamin C. How many molecules of C,H,0, does a Vitamin C…

A: Given,

Q: How many moles are in 87 g of Na2O? All answers have units of moles of Na2O O 1.4 6.0 x 1023 O 5.2 x…

A: Answer

Q: Number of molecules in 9×10−6 molmol CH3CH2OHCH3CH2OH. Express your answer using four significant…

A: No. of moles of CH3CH2OH = 9×10-6 No. of molecules in 9×10-6 moles of  CH3CH2OH can be calculated as…

Q: The volatile liquid ethyl mercaptan, C2H6S, is one of the most odoriferous substances known. It is…

A: The density (d) of a liquid is provided as the ratio of the mass (m) to the volume (V) as follows:…

Q: What is the percent (by mass) of oxygen in citric acid, C6H8O7.

A:

Q: If one grain of salt from a salt shaker weighs 0.000059 grams, how many moles of NaCl are in one…

A: Given, mass of 1 grain of salt of NaCl = 0.000059 g moles of NaCl in 1 grain of salt = ? Note: Molar…

Q: Xenon difluoride is one of the most stable xenon compounds. It is a powerful fluonnating agent with…

A: Give that  The heat of formation of Xenon fluoride is -108 KJ and is represented as Xe(g) + F2(g)…

Q: calculate the number of moles of HCI in 5 ml of conc. HCl whose density 1.19.g/cm3 and it contains…

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Q: 6NO + 4NH3 --> 5N2 + 6H2O Mole ratio of NO to N2 NH3 to N2…

A:

Q: Given the following equation: N2 + 3H2 --> 2NH3, write the following molar ratio for N2 to NH3 O a)…

A: The balanced Chemical equation given in the question is -   N2 + 3H2 -----> 2NH3   Here, in the…

Q: Zingerone, one of the flavor molecules in ginger, contains only C, H, and O. Combustion of 10.0 g of…

A: Given: Mass of Zingerone = 10.0 g Mass of CO2 = 24.914 g Mass of H2O = 6.522 g To determine: Molar…

Q: Water is formed by burning H2 (g) in the presence of O2 (g):    2H2 (g) + O2 (g) à 2H2O (g) a)    If…

A:

Q: The compound NHxNO3 contains 5.04% hydrogen by mass. What is the value of x? Enter your response as…

A: Given  % Hydrogen =  5.04 %  formula of compound  = NHxNO3 Value of x = ?

Q: Calculate the following, with proper number of significant figures: Molar mass of Al(CH3COO)3 is…

A: A question based on mole concept, which is to be accomplished.

Q: If the density benzene C6H6 is 0.879g/mL, how much many moles are present in 17.9 mL of benzene?

A: Given, Density of benzene = 0.879 g/mL Volume = 17.9 mL Molar mass of benzene is 78.11 g/mol Now,…

Q: 4. What is the percentage of water in the hydrate? mass of water in sample X 100 44.8% H,0 % water =…

A: The mass of water in a sample is 0.729 g. The mass of hydrate sample is 1.628 g.

Q: Quinine, C20 H24N2O2, is a component of tonic water and bitter lemon. Part C How many moles of…

A: Number of moles of N = number of moles of quinine × number of N per mole of quinine

Q: Brasses are alloys in which copper is the primary component and zinc is the second most abundant…

A: Given: % of Zinc in naval brass = 39.25 % Mass of sample of naval brass = 72.1 g Molar mass of Zinc…

Q: How do I solve this: 282.5g / 1mol (1 molecule / 1.189 x 10-21)= The "/" are supposed to be…

A: Molar mass of one molecule of oleic acid is 282.5 g /mol.

Q: 5) For each pair, indicate the LARGER quantity (number), If the two quantities are equal, whte…

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Q: 4.2g State your answer to 3 significant figures. Do not include the units. luoride, dioxide with 8.…

A: Mass of TiO2 = 4.2 g  Mass of BrF3 = 8.1 g

Q: How many grams of NH3 can be produced by mixing 14 g of N2  with 6.0 g of H2? Given:…

A: Nitrogen reacts with hydrogen to form ammonia. The equation for the balanced chemical reaction is…

Q: Ascorbic acid (C&H$O6) is also known as Vitamin C. What quantity in molecules of C6H&O6 does a…

A:

Q: Benzene, C6H6, is an important solvent and intermediate chemical in many chemical reactions. It is…

A: According to the mole concept, one mole of any substance related as - (1) 1 mole of the Substance =…

Q: Calculate the mass in grams of hydrogen chloride, HCl produced when 21 L of molecular hydrogen, H2…

A: Given :-  H2(g) + Cl2(g) → 2HCl(g)  Volume of H2 = 21 L Volume of Cl2 = 37 L  To calculate :-  Mass…

Q: For the molecular compound phosphorus triiodide, what would you multiply "molecules of PI3" by to…

A: Answer: 1 mole PI3 =6.02 x 1023 molecules PI3 Molecules of PI31 mole PI36.02 x 1023 molecules PI3

Q: How many molecules are present in 45g of fluorine gas, F₂? 2.71 x 1025 1.03 x 1027 7.13 x 1023 1.97…

A:

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.