5.416g sample that contained NaCl and BaCl2*H2O was heated. After heating the sample had a weight of 4.911g. What is the percent NaCl in the sample?

Q: A mixture of C3Hg and C,H, has a mass of 2.0 g. It is burned in excess Oz to form a mixture of water…

A: Let mass of C2H2 in the original mixture = y g So, mass of C3H8 in the original mixture = ( 2 - y )…

Q: 150. mL of 0.10 M KOH is mixed with 50.0 ml of 0.20 M HCI. What is the pH of the resultant solution.…

A: HCl                    +            KOH                    →…

Q: A 14.7 sample of CaCO3 was treated with aqueous H2SO4, producing calcium sulfate, water and 3.65g of…

A: Answer :- 56.4%  The % yield of CO2 = 56.4%…

Q: What amount of water (in moles) is produced by the reaction of 5.00 mol C5H12 with 27.5 mol O2?…

A:

Q: What mass of H2 can be produced when 6.0 mol of Al reacts with HCl?                2 Al   + 6 HCl…

A:

Q: moles of SO3

A:

Q: How many mililiters of O2 are consuked in the complete combustion of a sample of hexane, C6H14, if…

A: The balanced chemical reaction is given as follows: 2C6H14(g)+19O2(g)→12CO2(g)+14H2O(g) The volume…

Q: moles

A:

Q: According to the balanced reaction below, calculate the moles of NH, gas that form when 4.2 mol of…

A:

Q: For the reaction N2 (g) + 3H2 (g) → 2NH3 (g)  d. If 14.0 g of N2 were initially present, calculate…

A: The given reaction is, N2 (g) + 3H2 (g) --------> 2NH3 (g)  Here, 1 mol N2 reacts with 3 mols of…

Q: how many moles of NO2 are required to produce 1.33 mol of HNO3 in 3NO2+H2O=2HNO3+NO

A:

Q: Liquid octane CH3CH26CH3 reacts with gaseous oxygen gas O2 to produce gaseous carbon…

A: Given that, Liquid octane CH3(CH2)6CH3 reacts with gaseous oxygen gas O2 to produce gaseous carbon…

Q: 7. How many moles of the excess reagent is left over when 35 mol of N2 reacts with 63 mol of H2…

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

Q: If 25.0 g of NH3 and 51.8 g of O2 react in the following reaction, what is the mass in grams of NO…

A:

Q: 1 of 11 ► Vitamin C has the formula C H₂O₂. You burn 0.117 g of the compound in a combustion…

A:

Q: How much water can be formed if 150.0 g H2 is mixed with 1500 g of O2?

A: Given : mass of H2 = 150 g.              Mass of O2 = 1500 g  Tip : according to balanced equation…

Q: 28.528.5 mol of P4O10P4O10 contains how many moles of PP?

A: Given, 28.5 mol of P4O10

Q: S    +   6 HNO3  -->   H2SO4   +  6 NO2   +   2 H2O In the above equation how many moles of water…

A:

Q: A 14.594 g sample of CaCl, was added to 12.478 g of K,CO, and mixed in water. A 3.511 g yield of…

A: Given: Mass of CaCl2 taken = 14.594 g. Mass of K2CO3 taken = 12.478 g. And the experimental yield of…

Q: In certain reaction Fe and O2 combine to form irom(III) oxide. 10.7 mole of Fe and 10.4 mole of O2…

A: Balanced chemical equation: 4Fe(s) + 3O2(g) ------> 2Fe2O3 This shows 4 moles of Fe reacts with 3…

Q: The combustion of propane (C3H8) produces CO2 and H2O:                      C3H8(g) + 5O2 (g) --->…

A: Given that Moles of C3H8 = 4.6 mol Moles of O2 = 2.5 mol

Q: Gaseous ethane (CH3CH3) reacts with gaseous oxygen gas (O2) to produce gaseous carbon dioxide (CO2)…

A: The balanced reaction of ethane with Oxygen gas is – 2C2H6 g+ 7O2g →4 CO2 g + 6H2O g

Q: .) Consider the following reaction. 3H2(g) + WO3(s) → 3H2O(g) + W(s) When 500.0 g of WO3(s) react…

A: Since you have posted multiple questions,we will solve first question for you. To get remaining…

Q: Consider the following reaction 2H2(g)+O2(g)->2H2O(g) if 3.0 moles of H2(g) react fully with…

A: Number of Moles of Water  made can be calculated as follows -

Q: How many moles of NH3 can be produced from 16.5 mol of H2 and excess N2?

A: Nitrogen gas reacts with hydrogen gas to form ammonia gas. This reaction is represented in the form…

Q: C7H6O3 + C4H6O3  -> C9H8O4 + C2H4O2 what is the percent yeild when 79.0 g of C7H6O3 is added to an…

A: Given values- Weight of C7H6O3=79.0gm Actual yield= 86.1gm

Q: Burning ammonia can result in the formation of water and elemental nitrogen         4 NH3 + 3 O2 →…

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

Q: A careless student who was instructed to combine 4.00g of sodium sulfate with a solution containing…

A:

Q: The pesticide DDT, C14H9Cl5 is produced by the following reaction 2C6H5Cl + C2HOCl3 - C14H9Cl5 + H2O…

A: Amount of C2HOCl3 = 34.5 gAmount of C6H5Cl = 22.8 gMolar mass of C6H5Cl = 112.56 g/molMolar mass of…

Q: Ethanol (C2H5OH) is synthesized for industrial use by the following reaction, carried out at very…

A:

Q: A 5.31g sample of a compound that contains only hydrogen and sulfur was combusted and yielded 10.0g…

A: Let the compound be SxHy. SxHy undergoes combustion to give SO2 and H2O. The reaction taking place…

Q: 50g sample of a compound found only to contain carbon, hydrogen, and oxygen is burned to produce…

A: Use mass to calculate the moles of C and H. Use that to calculate the moles of O, the empirical and…

Q: In certain reaction Fe and O2 combine to form irom(III) oxide. 18.1 moles of Fe and 12.4 mole of O2…

A: Given, moles of Fe = 18.1 moles Moles of O2 = 12.4 moles First we find the limiting and the excess…

Q: n the following reaction, 250g of octane C8H18) are reacted with excess molecular oxygen.…

A:

Q: S + 6 HNO3 --> H2SO4 + 6 NO2 + 2 H2O In the above equation how many moles of water…

A:

Q: Aqueous hydrochloric acid HCl reacts with solid sodium hydroxide NaOH to produce aqueous sodium…

A: Given -  Mass of hydrochloric acid = 24.4 g Mass of sodium hydroxide= 17.4 g Mass of water= 2.19 g

Q: How many moles of H2 are needed to react with 0.90 mol of N2?

A:

Q: E-85 is an alternative fuel for automobiles and light trucks that consists of 85.0% (by volume)…

A: Given balanced equation:

Q: Given 10g of MgCl2 and 16g of AgNO3 and actual yield of 1.099g of AgCl, what is the theoretical…

A: Reaction equation:

Q: Menthol is composed of C,H, and O. A 0.1005g sample of menthol is combusted, producing 0.2829g of…

A: The empirical formula is the chemical formula of any compound that represents the proportions of…

Q: Part a) A plant undergoes photosynthesis in order to synthesize glucose (C6H12O6), according to the…

A: Given: moles of CO2 used = 0.0480 molmass of glucose produced ( actual yield) = 1.10gThe balanced…

Q: A chemist carries out this reaction, starting with 30.5 g of C6H6 and an excess Br2: C6H6(l) + Br2…

A: A numerical problem based on theoretical yield, which is to be accomplished.

Q: 2.) The first step in the reaction of Alka-seltzer with Stomach acid consists of one reacting with…

A: We have to find the moles of carbonic acid formed.

Q: 25.0g Fe2O3 and 25.0g CO How many grams of Fe

A: Number of moles = mass in gram / molar mass(g/mol) Mass of Fe = number of moles of Fe x atomic mass…

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.