The analysis of a sample of the mixture obtained during the industrial preparation of nitric acid gives a total mass for this sample of 80 g and a mass of 60 g of water. a) Calculate the mass fraction of nitric acid in the mixture.

Q: Chemical analyses conducted by the first Mars Rover robotic vehicle in its 1997 mission collected…

A:

Q: 19- by heating 2.86 g of hydrated sample of washing soda Na,CO3.XH20, till Complete drying the…

A: This reaction is all about the  conversion of hydrous salt into anhydrous salt by applying heat to…

Q: A sample of an iron alloy contains 89.4 g Fe, 2.50 g C, and 1.47 g Cr. Calculate the percent by mass…

A: Given :-  Mass of Fe = 89.4 g  Mass of C = 2.50 g  Mass of Cr = 1.47 g  To calculate :-  Percent by…

Q: copper(II) sulfate sodium chloride potassium sulfite calcium nitrate

A: Ions are charged species which can be both positively or negatively charged. These are of two types.…

Q: Outline the procedures you would use to determine whether a gas sample was composed of hydrogen or…

A: There are various techniques to identify the gas present in gas sample. Flame test is one of them.…

Q: Calculate the total number of N atoms in 23.8 g N2O5. O 2.65 x 1023 total N atoms O 9.31 x1023 total…

A:

Q: Calculate the mass percent of hydrogen in water and the mass percent ofoxygen in water.

A: The mass of one mole of water is 18g. In the mass of water, the mass of hydrogen is 2 grams and the…

Q: Write the Qc for this  Solid molybdenum(VI) oxide reacts with gaseous xenon difluoride to form…

A:

Q: What is the mass percentage of O in CO2? Provide an answer to two decimal places.

A: Given,  The mass percentage of O in CO2 is:

Q: Write a balanced chemical equation based on the following description: solid silicon dioxide and…

A: Balanced chemical equation is the equation in which equal number of atoms are present on both sides…

Q: What are the potential errors that could occur when using the Kjeldahl method to determine the…

A: Kjeldahl method principle : Strong acid helps in the digestion of food and liberates nitrogen which…

Q: A sample of air, upon analysis by an environmentalist showed that it contains 1.4 X 10-18 of mercury

A:

Q: Complete the following table.

A: Symbol number of protons number of neutrons number of electrons atomic number mass number net charge…

Q: What is efflorescence? Give an example?

A: The structure of chemical compound can be represented as structural formula. A structural formula…

Q: a) Magnesium Sulphate b) Sodium Chlorate c) Aluminum Nitrate

A: Ionic compounds: Ionic compound  Ionic compound composed of cation which is positively charged…

Q: Explain, in terms of the composition, why sample A represents a pure- substance. * B 8.

A: Those substances which have mass and occupies space is known as matter. Matter can be classified…

Q: (b) What mass of Na,AlO, can be formed from 165.0 g of NaOH?

A:

Q: hydrochloric acid + magnesium → hydrogen gas + magnesium chloride List two physical / chemical…

A: The question is based on the concept of chemical reactions. we have to write physical and chemical…

Q: A passenger jet contains 4050 kg of copper wiring. A rock sample contains 1.25% CuFeS2 by mass.…

A: % by mass is given by % by mass = mass of solute X 100 / mass of rock Since the rock has 1.25 %…

Q: A 0.580 g sample of calsium(Ca) is allowed to burn in 2.530 g of oxygen gas(O2). The sole product is…

A:

Q: Combustion of hydrocarbons such as dodecane (C1,H26) produces carbon dioxide, a "greenhouse gas."…

A: Combustion is the process in which the carbon containing compounds reacts with oxygen to form carbon…

Q: A 5.00 g mixture of potassium sulfide and potassium chloride contains 2.80 g potassium. What…

A: The mass percentage is calculated using the formula given below: Mass percentage =mass of potassium…

Q: The reaction of barium with sulfur is similar to that of magnesium with sulfur. Write the balanced…

A: A balanced chemical equation is the one in which the elements of the reactants becomes equal to the…

Q: An alcoholic fermentation was conducted in the laboratory using 280 g glucose as substrate with a…

A: Formula used are given below: Density = Mass of substance / Volume of substance and Percent Volume =…

Q: Coke is an impure form of carbon that is often used in the industrial production of metals from…

A:

Q: How many grams of nickel (III) chloride can be formed from 25.85 grams of solid nickel?

A: Recall the reaction to obtain nickel(III) chloride from solid nickel…

Q: A piece of solid iron sinks in a container of molten iron. A piece of solid aluminum sinks in a…

A: Since the density of solid is more than density of liquid and gaseous state. solid state is most…

Q: What is the mass percentage of Na in NaF?

A: The mass percent of an element is defined as the mass of that particular element present in the…

Q: Consider a mixture of three different gases: 1.90 g of argon (molecular mass = 39.948 g/mol), 3.10 g…

A: Argon, neon and helium gases do not react with each other in a mixture as they are inert gases.…

Q: . potassium carbonate + barium nitrate

A: The reactants given are  1) Potassium carbonate i.e K2CO3  2) Barium nitrate i.e Ba(NO3)2

Q: A metal sulfide M 2 S contains 14.3% of sulfur by massWhat is the identity of the metal in this…

A:

Q: Write a balanced chemical equation based on the following description: solid cesium reacts with…

A: According to the Law of conservation of mass " all atoms of different elements must be equal on both…

Q: Rank the following compounds in order of increasing mass percentage of nitrogen: NO, NO₂, N₂O.

A: NO :Formula to find the % of N :% of N = (mass of N / molar mass of the compound ) X 100…

Q: ure Fe2O3.  When solid Fe2O3 is heated with an excess of carbon, iron metal, and carbon monoxide are…

A: When Fe2O3 reacts with carbon, pure iron is obtained. The following reaction takes…

Q: A sample of gas mixture from a neon sign contains 3.32 x 10-2 mol Ne and 4.65 x 10-2 mol Kr. What…

A: Mol of Ne = 3.32 x 10 -2 mol Mol of Kr = 4.65 x102 mol

Q: How many moles of mercury (II) oxide are needed to produce 125 g of oxygen?

A: Given :- mass of O2 = 125 g  To calculate :- number of moles pg HgO required.

Q: Write the balanced chemical equation based on the following  aqueous potassium phosphate reacts…

A: Write the balanced chemical equation based on the following ---

Q: Hydrogen cyanide, HCN, is prepared from ammonia, air, and natural gas (CH4) by the following…

A: The balanced reaction taking place is given as, => 2 NH3 (g) + 3 O2 (g) + 2 CH4 (g)…

Q: What is the mass percentage of chlorine in iron (III) chloride (FeCl3)?

A: Mass percentage of chlorine = (mass of Cl in FeCl3 / Molar mass of FeCl3) x 100

Q: Write a balanced chemical equation based on the following description: solid cesium reacts with…

A: A chemical equation is written to represent a chemical reaction in short hand form. It is basically…

Q: suppose 1.57 g of Ca is heated in the air. what is the theoretical amount of CaO that will be…

A: The number of moles of a given chemical species refers to the ratio of mass to the molar mass. The…

Q: 1. Calculate the molar mass of the following compounds. a. magnesium phosphate b. sodium sulfide c.…

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

Q: Is there a difference between a homogeneous mixture of hydrogen and oxygen in a 2:1 ration and a…

A: Is there a difference between a homogeneous mixture of hydrogen and oxygen in a 2:1 ration and a…

Q: How many grams of aluminum oxide (Al2O3) will be formed from 12.1 grams of oxygen (O2)

A:

Q: What is? CUSO•5H,0 Cuso '2

A: CuSO4 is a copper(II) sulfate with the oxidation state of copper to be+2. It's an inorganic…

Stoichiometry

Stoichiometry is a chemical division that evaluates the quantitative content of the chemical process with the help of the reacting molecules or products taking part in the reaction. The term “stoicheion” in “Stoichiometry”, is an old Greek term for "element" whereas “metron” means "measure".