what is the mass percentage composition of the elements in the following compounds? Round to the nearest tenth. a. Potash, K2 CO3 b.Gypsum, Ca SO3 c. Saltpeter, KNO3 d. Caffeine, C8 H10 N4 O2

Q: The combustion of ammonia in the presence of excess oxygen yields NO2 and H2O:…

A: The given reaction is, 4 NH3 (g) + 7 O2 (g)  →   4 NO2 (g)  + 6 H2O (g) The reaction is already…

Q: 16. The mineral enargite is 48.41% Cu, 19.02% As, and 32.57% S by mass. What is the empirical…

A:

Q: Calculate the number of C atoms in 5.50 g of C. 6.02 x 10 23 C atoms O 3.31 x 10 24 C atoms O 5.01 x…

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Q: 4 C3H;N3OS(1) → 12 CO2(g) + 6 N2(g) + O2(g) + 10 H20(g) a. How many oxygen atoms are present in a…

A: Number of moles = mass/molar mass  Mass = moles × molar mass  Density = mass/volume  Mass = density…

Q: Calculate the mass (in kilograms) of chlorine in 25 kg of each chlorofluorocarbon (CFC). a. CF,Cl2…

A: Solution-  mass of the clorine in the CF2Cl2-=molar mass of colorinemolar mass of the…

Q: Phosphorus may be determined analytically by precipitating it as MgNH4PO4 followed by ignition to…

A: Given data: Mass of sample of phosphate rock = 9.346 gms It contains 71.24% of Ca3(PO4)2 So, mass of…

Q: What is the mass percent of carbon in oxalic acid, H2C2O4

A: Since we know that mass percent of any element in a compound is calculated as  Mass % of element =…

Q: 3. Lithium has two stable isotopes with masses of 6.01512 u and 7.01600 u. The average molar mass of…

A: Answer is explained below.

Q: What is the percentage of C in Sodium carbonate (Na2CO3)? Atomic Masses: Na = 22.99 amu; C= 12.01…

A: To Solve this problem we will calculate the mass of C in sodium carbonate .

Q: Elemental phosphorus can be prepared from calcium phosphate via the overall reaction2 Ca3(PO4)2 + 6…

A: The reaction considered is,

Q: Ammonium dihydrogen phosphate, formed from the reaction of phosphoric acid with ammonia, is used as…

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Q: Which element comprising Ma(OH)2 has the highest percentage by mass?

A: The compound given is Mg(OH)2. Assuming 1 mole of Mg(OH)2.

Q: Calcium silicate is an important mineral compound that can be prepared by the reaction of calcium…

A: Given balanced chemical equation is:          2 Ca3PO42aq + 6SiO2s → P4O10aq + 6CaSiO3s Mass of…

Q: Iodine is made by the following reaction 2 NaIO3 (aq) + 5 NaHSO3 (aq) → 3 NaHSO4 (aq) + 2 Naz SO4…

A: 2 NaIO3(aq) + 5 NaHSO3(aq) →3 NaHSO4(aq)+2Na2SO4 (aq)+…

Q: What is the molar mass of phosphorus pentachloride (PC15)? O 190.30 g/mol O 208.22 g/mol O 172.75…

A:

Q: Iodine is made by the following reaction 2 NaIO3(aq) + 5 NaHSO3(aq) → 3 NaHSO4 (aq) + 2 Na2SO4 (aq)…

A: Given , Reaction : 2NaIO3(aq) +5 NaHSO3(aq) → 3NaHSO4(aq) + 2Na2SO4(aq) +H2O(I) +I2(aq)

Q: The combustion of ammonia in the presence of excess oxygen yields NO2 and H2O: 4 NH3 (g) + 7 O2 (g)…

A: 4 molesNH4 NH3 +702 G4NO24 NO + 6H₂OMy gives a proles Nomole NH₃ gines Imole No.17 g NHg gives 46 gm…

Q: The molecule TFM is used as a lampricide to control the sea lamprey population in the Great Lakes.…

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Q: The semi-precious stone turquoise is a hydrate and with the chemical formula CuAl₆(PO₄)₄(OH)₈･4 H₂O.…

A: Hello. Since your question has multiple sub-parts, we will solve the first three sub-parts for you.…

Q: Elixirs such as Alka-Seltzer use the reaction of sodium bicarbonate with citric acid in aqueous…

A: The balanced reaction taking place is given as 3 NaHCO3 (aq) + C6H8O7 (aq) -------> 3 CO2 (g) + 3…

Q: O CHEMICAL REACTIONS Combustion analysis 6.00 g of a certain Compound X, known to be made of carbon,…

A: Given :  Molar mass of compound X = 78 g/mol  Mass of compound used = 6.00 g  Mass of Carbon dioxide…

Q: What is the mass percent of chromium in Fe2(CrO4)3, which has a molar mass of 460 g/mol? 26% 34%…

A: The given compound is Fe2(CrO4)3  Given molar mass of this compound = 460 g/mol  Therefore, total…

Q: A sample of gas mixture from a neon sign contains 5.12 x 10- mol Ne and 4.40 x 10- mol Kr. What are…

A: Mass percentage is the ratio of mass of a substance to the mass of mixture, multiplied by 100. Fir…

Q: 3. What is the mass percent of oxygen in Al2(SO4)3 18H2O? (molar mass is 666.43 g/mole) (A) 9.60 %…

A: Dear student I have given answer to your question in the image format.

Q: Iodine is prepared both in the laboratory and commercially by adding Cl2(g)to an aqueous solution…

A: When stoichiometric coefficient results in the equal number of atoms of each element on both the…

Q: compound has the composition of 66.6% Carbon, 11.2% Hydrogen, and 22.2% Oxygen, by mass. If the…

A: Given is, 66.6% Carbon, 11.2% Hydrogen, and 22.2% Oxygen Molar mass= 144.2 g/mol

Q: 4 KO₂ (s) + 2 CO₂(g) → 2 K₂CO₃(s) + 3 O₂(g) What is the mass in grams of oxygen gas that can be…

A: Given  Reaction  4KO2(s)  + 2CO2(g)   →  2K2CO3(s)  + 3O2(g)   Mass of CO2  = 0.355 gram Mass of…

Q: 7) What is the mass in grams 6 mol of KOH? 1) 24g 2) 56 g 3) 230 g 4) 336 g 8) A compound has…

A: 7)   Molar mass of KOH is calculated as; K=1×39.10 g/mol=39.1 g/molO=1×16 g/mol=16 g/molH=1×1.01…

Q: Titanium tetrachloride, TiCl4 , is prepared by the reaction below.…

A: Given, Mass of TiO2 = 35g. Mass of Cl2 = 38g. Mass of C = 11g. The balanced reaction for the…

Q: %3D The mass of 2.21 x 1040 atoms of iron (molar mass = 55.845 g/mol) is O 2.78 x 104 g. 2.05 x 102g…

A:

Q: What chemical property of potassium chlorate did you use to design a procedure to determine the…

A: Interpretation-  Tell that chemical property of potassium chlorate which we use to design a…

Q: What is the mass, in grams, of 6.5 x 10-3 moles of ammonium phosphate? 1.35 g 0.97 g 0.85 g 0.73 g

A: Concept:  Moles and molar mass can be used to predict the mass of the sample. Moles is unit to have…

Q: Aspartame is an artificial sweetener that is 160 times sweeter than sucrose (table sugar) when…

A: Hi, since there are multiple questions posted we will provide you with answers for the first two…

Q: A metal (M) forms an oxide with the formula M₂O. If the oxide contains 3.835% O by mass, what is the…

A: Formula of metal oxide is M2O. Molar mass of oxygen is 16 g.mol-1.  Consider the molar mass of metal…

Q: Ammonia, an important source of fixed nitrogen that can be metabolized by plants, is produced using…

A: Recall the Haber's process in which nitrogen and hydrogen are combined -…

Q: 8.50 g of a certaln Compound X, known to be made of carbon, hydrogen and perhaps oxygen, and to have…

A:

Q: Calculate the mass percent composition of nitrogen in each following nitrogen compounds B. BN C. NO2…

A: The mass percent of N = (Total Molar Mass of N in the compound / Molar Mass of compound) * 100%

Q: A substance, AzB, has the composition by mass of 60% A and 40%B. What is the composition of AB2 by…

A: Find solution below

Q: What is the mass percentage of C in CH;CH,OH? 52.144 % 3.

A: The given question is based on the knowledge of the determination of the empirical formula of the…

Q: What is the chemical formula of a compound with an empirical formula of CH2O and a molar mass of…

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Q: Over the years, the thermite reaction has been used for welding railroad rails, in incendiary bombs,…

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Q: What is the mass of a 5.521 mole sample of MgCl2? O 17.26 g O 100.7 g O 525.7 g O 256.1 g

A: The given substance contains 5.521 moles of MgCl2. The mass of magnesium chloride can be determined…

Q: What is the percent composition of nitrogen, by mass, in ammonium errocyanide, (NH4)4[Fe(CN)s] .…

A: Consider the given information is as follows; Atomic weight of N = 14 Atomic weight of H = 1 Atomic…

Q: A single tablet of regular strength Tylenol contains 325 mg of the active ingredient, acetaminophen…

A: The molecular formula of acetaminophen has been provided as C8H9NO2.

Q: Determine the empirical formulas of the compounds withthe following compositions by mass:(a) 55.3%…

A: To determine the empirical formulas of the compounds: a).

Q: A compound has the composition of 54.53% Carbon, 9.15% Hydrogen, and 36.32% Oxygen, by mass. If the…

A: Empirical formula is the formula in which elements are present in the simplest ratio. Example:…

Q: One of the most widespread environmental carcinogens (cancer-causing agents) is benzo[a]pyrene…

A: Given, C present in 95.21% H present in 4.79%.  At first we need to find the empirical formula and…

Q: A rock is 6.5% by mass fayalite (Fe2SiO4), 14.2% by mass forsterite (Mg2SiO4), and the remainder…

A: In this question given: Fe2SiO4- Fayalite has 6.5% and 14.2% by mass forsterite, remaining is 79.3%…

Q: What is the molar mass of Mg3(PO4)2, a substance formerly used in medicine as an antacid? 251 g…

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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.