18. A compound with molecular mass of 74.1 g/mol is found tO contain 64.8% carbon, 13.5% hydrogen, and 21.7% oxygen. What is the molecular formula? O A. CH20 O B. C2H602 O C. C4H10O O D. CAH1003

Q: 27.) Grive name la, Hg PO4 6. FegOg C. NaCIO4 d. PbCl2 e. HBr f, Al(OH)s

A: Moles can't be calculated because for the calculation of moles we need mass.. name I am providing in…

Q: 21. A compound contains 70.6% carbon, 5.9% H, and 23.5% O by mass. The molecular weight of this…

A: Molecular formula of a compound tells the number of different atoms present in the compound.…

Q: Name these compounds. NO, CH3 (a) (b) Br Cl Br (c) C,H;CH,CH,CH,Cl (d) C,H;CCH,CH3 CH3

A:

Q: C + 2 H2 ----> 1 CH4 What is molar ratio of C to H2 ?

A: C + 2H2 --> 1CH4

Q: How many moles of carbon dioxide are there in 52.06 g of carbon dioxide?   Select one or more: a.…

A: The number of moles indicates the amount of a particular atom in the compound containing that atom.…

Q: Which of the following is a molecular compound? A) LiOH B) ZnS C) KCN D) BaCl2 E) P4O10

A: Mainly compounds are classified into ionic and molecular compounds.  (1) Ionic compounds are those…

Q: A 2.00 g sample of an organic compound contains 0.675 g of carbon. How much carbon would a 4.00 g…

A: ◼️ Given that:  2.00 g of organic sample has 0.675 g Carbon  Carbon in 4.00 g of same organic…

Q: A) Croz, H,SO4, H;0 B) 1. Na BH4, ethanol 2. H3o+ C) 1. LIAI4 , ether 2. H;0+ D) 1. PCC, CH;Cl2 2.…

A: since NaBH4,Ethanol and H2O is a weak reducing agent that can only able to reduce ketone not the…

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

A:

Q: POLYMER 1 molecular mass (g) weight |(g/mol) 50000 9.5 25000 8 3000 13.25 10000

A:

Q: Researchers obtained the following data from experiments to find the molecular formula of…

A: In order to find the formula of benzocaine we first write down the given data: Mass of the sample=…

Q: Which is expected to have AS°rxn < 0? 1.4Al(s) +302(g) → 2A12O3(s) 2. PCI5(g) PCI3(g) + Cl2(g) 3.…

A: If heat flows into the system from the surroundings, Delta S of the surroundings is less than zero.

Q: 11) Determine the molecular formula of a compound that has a molar mass of 232.32 g/mol and an…

A:

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

A:

Q: Name the compounds  a) NaCl

A: We have to name the given compounds

Q: A compound composed of 93.7% carbon and 6.3% hydrogen, by mass, has a molecular mass of 128 amu.…

A: The percentage composition of each element is given in the question. Calculate the empirical formula…

Q: Q1. a) If 2.032 x1023 molecules of benzene (C,Hs) reacts with excess chlorine (Cl2), how many grams…

A: We will use stoichiometry of the reaction to get the answer.

Q: What is the number of molecules in 319g of Li2SO4? (Take NA = 6 x1023)

A: The question is based on mole concept. We have  to determine number of molecules present in the…

Q: The percent composition by mass of a compound is 76.0% C, 12.8% H, and 11.2% O. The molar mass of…

A: We have given that percentage composition of mass of compound  Percentage of C = 76.0 %  Percentage…

Q: How many individual formaldehyde (CH20 = 30.03 g/mol) are found in a 32.0 mL sample %3D of gaseous…

A: Data given, Volume of formaldehyde = 32.0 mL The density of formaldehyde = 0.815 g/mL Molar mass of…

Q: Determine the formula for a compound with 25.24% S, 74.76% F and a molecular weight of 254.112…

A: Let's determine the empirical formula of the compound first.

Q: What is the empirical formula for the compound made from Y3+ and Cl? Select one: a. YCI3 b. Y3CI c.…

A: Empirical formula is simple whole numbered ratio of atoms present in compound.

Q: 5) Calculate the mass percent of chlorine for each compound listed. A. C6H6O3CI4 B. CF3C13

A: The answer to the following question is given as:

Q: Threonine is an amino acid with the formula C4H9NO3C4H9NO3. Determine the number of moles of carbon…

A: Formula of Threonine = C4H9NO3  Mass of threonine = 48.15 g Moles of carbon = ?

Q: find the empirical formula for the tin oxide formed? calculate the sn% and o%? calculate the %error…

A: Given information: mass of crucible= 25.7700 g mass of crucible and tin =26.6952 g mass of crucible…

Q: 1. What is the molecular formula if the empirical formula is C2Hs and the molecular molar mass is…

A:

Q: A compound of hydrogen and carbon is 92.3% carbon, If 40 g of hydrogen is reacted with 135 g of…

A: Molecular mass is the sum of the masses of all the atoms in a given molecule. Percentage composition…

Q: Fullerenes are molecules composed of only carbon atoms. One fullerene is C60 a carbon molecule…

A: The number of moles of a substance is defined as the mass of the substance upon its molar mass.

Q: Determine the number of moles of carbon in 41.95 g41.95 g of leucine.

A: Given :- mass of leucine is 41.95 g  To calculate :- number of moles of carbon

Q: 1. DIBAH, -78 °C 2. HСI mCPBA (RCO3H) CF;SO;H

A: Given 1 Product = to be determined  2 Reactant = To be determined

Q: 23 - Determine the molecular fomula of a compound that has a molar mass of 183 g/mol and an…

A: This question is straight forward We know that molecular formula is whole number multiple of…

Q: Calculate mass percent composition of carbon in each compound. a.) C2H2 b.) C3H6 c.) C2H6 d.) C2H6O

A: a.) C2H2    Molecular mass of C2H2 = 26.0 g  2 C = 12.0 g x 2 = 24.0 g C % C = [(24.0 g C) / (26.0 g…

Q: 25. A sample of a compound contains 9.49g silver and 3.12g chlorine. A second sample of the compound…

A: Given: 1) A sample of a compound contains Silver with mass = 9.49 g 2) A sample of a compound…

Q: 34 - Find the rough formula of the compound containing 38.67% C, 16.22% H, and 45.11% N by mass. A)…

A: Correct answer is B

Q: 1. Compute the formula mass/molecular mass of, A. Carbon Dioxide i. Compute the number of moles in…

A: Given,  Compute the formula mass/molecular mass of (A). Carbon Dioxide i. Compute the number of…

Q: a. Al (s) + HCl (aq) → AlCl3 (aq) + H2 (g) b. C2H4 (s) + O2 (g) → CO2 (g) + H2O (g) NH3 (g) + 02 (g)…

A: Following are the balanced chemical equations.

Q: How many grams of Al3+ are present in 4.12 grams of aluminum iodide?  How many grams of aluminum…

A: To find the grams, number of moles should be calculated.  Moles = Given mass/ molar mass

Q: 24. cont. NACN, (CH,),NCHO 30°C 1) NABH4 H 2) НC\ag) iBr KOH, CH;CH,OH f) 78°C Itt 1) Hg(O,CCF3)2,…

A:

Q: 30. A sample of a compound containing only S and Cl contains 2.72g S and 6.04g Cl. Another sample of…

A: given data = a sample compound only containing S and Cl S = 2.72 g, Cl = 6.04 g another sample of…

Q: Calculate the Percent Composition by mass of the given compound: KNaC4H4O6∙4H2O Percent mass of K…

A: Percentage mass of any element in a given compound can be calculated as (mass of the element divided…

Q: The number of hydrogen atoms in 0.500g of glucose (C6H12O6) is a. 12 b. 1.67x1021 c. 2.78x10-3 d.…

A:

Q: 1. 2. G. CH3 CI (CH,CH,),CuLi Ether, -78 °C Н. 1. Me. 2. Си

A: The question is based on the concept of organic reactions. we have to determine the product in the…

Q: And set up the mole ratio of O2 to C4H9OH =    CO2 to O2= Confused on how to do the ratios.

A: mole ratios is the ratio of moles of one component to the moles of another component in a balanced…

Q: 1 mole of C is 12 gm and 1 mole of H 1 gm, How many atoms of (C) in CH4 O21200000…

A: The correct answer is given below

Q: A 30.21 g sample of a compound that contains only carbon and hydrogen was combusted and yielded…

A:

Q: Researchers obtain the following data from experiments to find the molecular formula of benzocaine,…

A: Given: The amount of carbon dioxide (CO2) and water (H2O) formed by the complete combustion of 3.54…

Q: determine the number of atoms of 75.82g of Ca(No3)2

A:

Thermochemistry

Thermochemistry can be considered as a branch of thermodynamics that deals with the connections between warmth, work, and various types of energy, formed because of different synthetic and actual cycles. Thermochemistry describes the energy changes that occur as a result of reactions or chemical changes in a substance.    

Exergonic Reaction

The term exergonic is derived from the Greek word in which ‘ergon’ means work and exergonic means ‘work outside’. Exergonic reactions releases work energy. Exergonic reactions are different from exothermic reactions, the one that releases only heat energy during the course of the reaction. So, exothermic reaction is one type of exergonic reaction. Exergonic reaction releases work energy in different forms like heat, light or sound. For example, a glow stick releases light making that an exergonic reaction and not an exothermic reaction since no heat is released. Even endothermic reactions at very high temperature are exergonic.