The mineral hedyphane has the formula Pb3Ca2(AsO4)3Cl  (m.w = 1154.0 g/mol).  How many moles of calcium are present in a 0.500 mol sample of hedyphane? Select one: 0.539 mol 1.00 mol 4.33×10–4 mol 8.66×10-4

Q: Paracresol (p-cresol) is used as a disinfectant and in the manufacture of herbicides. A 0.4039 g…

A: Recall the data from the question Mass of sample=0.4039 g mass of carbon dioxide=1.1518 g mass of…

Q: How many grams of the ammonium carbonate, (NH4)2CO3 were added to water if there are 5.51 x 1023…

A: Avogadro's  number gives the number of atoms, molecules or ions in one mole of the substance and it…

Q: O₂(g) + 2 H₂(g) → 2 H₂O(1) - Assume 0.250 mol O₂ and 0.810 mol H₂ are present initially. After the…

A: The stoichiometry of the balanced chemical reaction states that one mole of oxygen reacts with two…

Q: How much hydrochloric acid (in mol) should theoretically react with one antacid tablet containing…

A: Weight of CaCO3 = 750 mg = 0.750 g (1g = 1000 mg)Molecular weight= 100.089 g/mol

Q: a) An aqueous solution contains 2.52 g of Pb(NO3)2 in one liter.  How many moles of each ionic…

A: Pb(NO3)2 is a strong electrolyte. I aqueous solution is dissociates completely as: Pb(NO3)2…

Q: An organic liquid is either methyl alcohol (CH3OH), ethyl alcohol (CH3CH2OH) o a mixture of the two.…

A: The combustion reaction of methyl alcohol and ethyl alcohol:

Q: Mg(s) + 2 HCl(aq) −−−→ MgCl2aq) + H2(g)   given that the mass of magnesium is 0.030 g, find the…

A:

Q: Morphine (C₁₇H₁₉NO₃) is a painkiller in the opiate family. A sample of morphine was discovered that…

A:

Q: A student heated the 3.572 g sample of chromium (III) chloride on a hot plate until no more water…

A: Given that, Mass of hydrated chromium (III) chloride (CrCl3•xH2O) = 3.572 g  [* x = number of moles…

Q: Menthol is a flavoring agent extracted from peppermint oil. It contains C, H, and O. In one…

A: no of moles=mass/molar mass General Empirical formula  Cx H 2x Oy

Q: A mixture is 19.9% NaCl, 21.0% CaCl2, and 59.1% NaBr. What mass of the mixture contains 0.485 moles…

A: mass of the mixture that contains 0.485 moles of chloride ions moles of sodium ions present in 24.0…

Q: How many moles are present in 100. g of aspirin (C 9H 8O 4, molar mass 180.2 g/mol)?

A: The given mass of aspirin is 100g. Molar mass of aspirin is 180.2 g/mol.

Q: un o 8u described in this laboratory. After heating, the sample is found to weigh 2.245 grams. How…

A:

Q: Cu   +   8HNO3  --> 3 Cu(NO3)2    +  2 NO   +  4  H2O In the above equation how many moles of water…

A: Given  Mass of HNO3 = 197.1 g Number of moles of water = ?

Q: The density of ammonia, NH3, is 7.71 x 104 g/mL. Calculate the number of moles of ammonia in a 31.9…

A:

Q: Xanthotoxin, a photosensitizer compound found in parsnips, contains only C, H, and O. Combustion of…

A: Given,

Q: What is the maximum amount of grams of aluminum oxide (MM = 101.96 g/mol) that could be made by the…

A: The given reaction is: 4Al(s) + 3O2(g) → 2Al2O3(s) The given mass of Al = 5.10×102Molar mass of Al =…

Q: For the chemical reaction 2KI+Pb(NO3)2-->PbI2+2KNO3 what mass of lead (ii) is produced from 1.13…

A: Given: Moles of KI = 1.13 g Molar mass of PbI2 = 461.01 g/mol

Q: The goal of the first part of the experiment is to determine the value of n in the formula for…

A: Answer:This question is based on stoichiometric calculation where we have to establish the relation…

Q: One of the challenges astronauts face is in space travel is the build-up of carbon dioxide in their…

A:

Q: Methanol, which is present in mentholated cough drops, is an organic compound containing only C, H…

A: Combustion is a high-temperature exothermic redox chemical reaction between a fuel and an oxidant,…

Q: A chemist weighs 50.0 grams of solid Mg(OH)2. How many moles of Mg(OH)2 are in the sample? How…

A: Given :-  Amount of Mg(OH)2 = 50.0 g  To Calculate :-  No.of moles of Mg(OH)2  No.of formula units…

Q: 2) The molecular formula of allicin, the compound responsible for the characteristic smell of…

A: The molecular formula of allicin is C6H10OS2.

Q: What is the mass in milligrams of the solute in 25.0 ml of 0.275 M NaOH? (atomic weights: H=1.01;…

A: Number of moles = mass/molar mass  So, mass = moles × molar mass   Molarity = moles of solute/volume…

Q: Morphine (C₁₇H₁₉NO₃) is a painkiller in the opiate family. A sample of morphine was discovered that…

A: Given: When morphine undergoes combustion, carbon dioxide is produced. Mass of mixture            =…

Q: For the chemical reaction 2NaOH+H2SO4⟶Na2SO4+2H2O, how many moles of sodium sulfate will be produced…

A: 1- First calculate the moles of NaOH :  moles of NaOH = ( mass / molar mass of NaOH)  moles of NaOH…

Q: How many atoms of oxygen are contained in 47.6 g of Al2(CO3)3? The molar mass of Al2(CO3)3 is 233.99…

A: Given data,Mass of Al2(CO3)3 = 47.6 gMolar mass of Al2(CO3)3 = 233.99 g/molNumber of moles of…

Q: How many atoms of oxygen are contained in 47.6 g of Al2(CO3)3? The molar mass of Al2(CO3)3 is 233.99…

A: 1 mol 6.022×1023  atoms First we are going to calculate the moles of the compound then according to…

Q: Barium oxalate is used as a colorant to produce the green color in fireworks.  Imagine that you have…

A: Given,when barium hydroxide octahydrate ( Ba(OH)2·8H2O) reacts with oxalic acid…

Q: Morphine (C₁₇H₁₉NO₃) is a painkiller in the opiate family. A sample of morphine was discovered that…

A: Mass % of morphine = Mass of morphine x 100/Mass of mixture

Q: For the chemical reaction Cal₂ + 2 AgNO3 2 AgI + Ca(NO3)2 how many moles of silver iodide (AgI) are…

A: We used mole coefficient ratio of reactants and products to calculate the number of moles of…

Q: Silver sulfide, Ag2S, also called argentite, is an economically important silver ore. If a silver…

A: From the molar masses, we can estimate the amount of silver produced per day from Argentine (Ag2S)…

Q: Based on the balanced reaction: 2 Al + 3 Cl2→ 2 AlCl3, what is the maximum number of moles of AlCl3…

A: The number of moles of Al and Cl2 is 2.11×101 mol and 1.990×101 mol, respectively.

Q: 3KOH+H3PO4⟶K3PO4+3H2O what mass of phosphoric acid in grams is needed to produce 2.15 mol of water?

A:

Q: What mass in grams are in 5.32x10^22 molecules of CO2? For some reason, I'm getting confused on how…

A:

Q: Use the concept of molarity to calculate the molarity of a solution prepared by dissolving 25.00 g…

A:

Q: g 4. Quinone, which is used in the dye industry and in photography, is an organic compound…

A:

Q: 3 Cu + 8HNO3 --> 3 Cu(NO3)2 + 2 NO + 4 H2O   In the above equation how many moles of water can be…

A: Given- Reaction-3 Cu + 8 HNO3 → 3 Cu(NO3)2 + 2 NO + 4 H2O Mass of HNO3 = 138.6 grams To find- Number…

Q: A sample of a substance (containing only C, H, and N) is burned in oxygen.3.382 g of CO2, 2.307×10-1…

A: To calculate the empirical formula, it is required to calculate the amount of carbon, hydrogen and…

Q: An old antacid commercial claimed that each tablet of their product could neutralize 47 times its…

A:

Q: Consider the reaction 3X + 2Y5C + 4D With excess Y, how many moles of X are needed to produce 13.00…

A:

Q: what is the empirical formula for a compound that is 41.8% N, 24.7% C, 31.4% O, and 2.1% H by mass?…

A: Percentage by mass: 41.8% N 24.7% C 31.4% O 2.1% H  The molar mass of the compound = 100.06 g mol-1…

Q: How many atoms of CO2 can be produced from 4.21 x 10^28 atoms of oxygen gas (O2)? 1 mol = 6.02 x…

A: According to the question, we need to calculate how many atoms of CO2 can be produced from 4.21 x…

Q: How many moles of sodium chlorate (NaCIO3) are required to produce 0.235 mol O2? 2 NaCIO3(s) – 2…

A:

Q: Consider the following reaction: If 10.0 g of KF are used, how many grams of CaF2 can be formed?…

A: Given, Ca(NO3)2(aq) + 2KF(aq) → CaF2(s) + 2KNO3(aq) mass of KF reacts = 10.0 g mass (in grams) of…

Q: A sample of a substance (containing only C, H, and N) is burned in oxygen. 3.375 g of CO2,…

A: Let the compound be CxHyNz. Calculation of no. of moles of CO2 produced: n=given massMolar…

Q: How many moles of lithium hydroxide would be required to produce 86.0 g of LizCO, in the following…

A: The chemical reaction is given as:2 LiOH (s) + CO2 (g) → Li2CO3 (s) + H2O (l) According to the…

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".