Paris green is a highly toxic emerald green compound with the formula Cu(C2H3O2)2 x 3Cu(AsO2)2. What is the percent by mass arsenic?

Q: The compound(NH4)2 S2 O3, Which element is present in the largest percent by mass? A. N B. S C. O…

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Q: When 6.65 g of the hydrate NiSO4 • xH2O was heated in a vacuum, the water was driven off and 3.67 g…

A: NiSO4 . xH2O is a hydrated form of nickel Sulphate and the water involved is called water of…

Q: Calculate the mass in grams of 1.10 x 1024 molecules of Sulfane, H2S. g NA= 6.022 x 1023

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Q: What is the mass in grams of 3.88 × 1025 molecules of Br2?

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

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Q: Ethylenediaminetetraacetic acid (EDTA) is a chemical that binds metals such as lead, to treat lead…

A: The molecular formula of Ethylenediaminetetraacetic acid (EDTA) is C10H16N2O8. We know that the…

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: What is the mass in grams of 7.3 x 1024 molecules of lactic acid (C3H6O3), the compound responsible…

A: Given;

Q: Calculate the mass percent of H2O in CuSO4•5H2O

A: Mass of water = 5 x 18 = 90 g Molar mass of CuSO4.5H2O = 249.5 g/mol

Q: 1. The number of ammonia (NH3) molecules present in 4.85 grams of NH3 is: 2.…

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Q: What is the formula mass of CaSO4·½H2O?

A: Given, Formula mass of CaSO4·½H2O = ? Note: Atomic mass of Ca = 40.078 g/mol Atomic mass of S =…

Q: What is the molecular formula a compound with the empirical formula C 13 H 19 O 2 and molar mass of…

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Q: If 34.0 g of MgSO4⋅7H2O is thoroughly heated, what mass of anhydrous magnesium sulfate will remain?

A: Given:Mass of  MgSO4⋅7H2O = 34.0 gWe need to find mass of anhydrous magnesium sulphate  produced…

Q: The chemical formula of lysine (a building block of proteins) is C6H14N2O2. Given that the formula…

A: Given, Formula mass of lysine, C6H14N2O2 = 146.19 amu = 146.19 g/mol

Q: 4. Determine the percent composition by mass of all elements in H,SIO3.

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Q: A compound with a molar mass of 176.0g/mol has an elemental composition of 68.2% C, 6.86%H, 9.08%O,…

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

Q: The molar mass of the potassium alum salt, KAl(SO4)2 ● 12 H2O is?

A:

Q: What are the empirical formula and empirical formula mass for C3H9O3?

A: Given molecule is                          C3H9O3

Q: 2. What is the mass (in grams) of 7.11 X 102 molecules of tetraphosphorous trisulfide?

A: Given, number of molecules = 7.11×1022 Avogadro's constant = 6.022×1023 molecules.mole-1

Q: Calculate the molar mass of each of the following compounds:(a) hydrogen fluoride, HF(b) ammonia,…

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

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: Calculate the mass (in kilograms) of chlorine in 25 kg of chlorofluorocarbon (CFC). CF2Cl2

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Q: The molar mass of CuCl2 is 1. 134.6 2. 98.9 3. 207.7 4. 63.55

A: Molar mass of CuCl2 = 134.5 g/mol Molar mass of Cu=63.54g/mol Molar mass of Cl=35.45g/mol So molar…

Q: Calculate the mass percent of chlorine in Mg(ClO4)2.

A: We know that, Molar mass of Cl = 35.45 g/mol Molar mass of Mg(ClO4)2 = 223.206 g/mol

Q: Consider a 214.6 g sample of the compound manganese(IV) perchlorate. Using the formula Mn(ClO₄)₄ (MM…

A: The mass of the sample of the compound manganese(IV) perchlorate is = 214.6 g The molar mass of…

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: What is the mass percent of carbon in NaC2h3O2= 82.03 g/ mol

A: Given                                                                           mass of NaC2h3O2=…

Q: What is the molar mass of the sodium alum salt, KAl(SO4)2 •12H2O?

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

A: Molar mass of Mg3(PO4)2 is calculated as,

Q: 5. For many years the recovery of gold, that is, the separation of gold from other materials,…

A: Given, 4Au+8KCN+O2+H2O→4KAu(CN)2+4KOH Gold extracted = 29.0 g moles of gold : =mass of goldmolar…

Q: What's the mass in grams of 1.02 x 1022 molecules of nitric acid (HNO3)? O 1.07 g O 63.0 g O 37.2 g

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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:

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: 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: a) What is the empirical formula of oxalic acid if its percent composition is 26.7% C, 2.2% H, and…

A: a)Empirical formula is the simplest ratio of atoms present in a compound but not gives  the actual…

Q: A laboratory analysis of vanillin, the flavoring agent in vanilla, determined the mass percent…

A: An empirical formula is a type of chemical formula that expresses the proportion of elements in a…

Q: what is the mass percentage composition of the elements in the following compounds? Round to the…

A: Mass percentages are helpful to predict composition of compounds. This compound is always made up of…

Q: Phosgene, a substance used in poisonous gas warfare during World War I, is so named because it was…

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

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…

A:

Q: What is the mass percentage of O in C₃H₈O₂? Provide an answer to two decimal places.

A: We have to find the mass % of O in C₃H₈O₂ As,  Atomic mass of C = 12 g mol-1 Atomic mass of H = 1 g…

Q: How many grams of calcium nitrate are present in 55.2 moles of Ca(NO3)2?

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Q: 18. What is the percent composition by mass of oxygen in sodium oxide, Na,o, (molar mass Naz0 =…

A: The molecular formula of the given compound is = Na2O The percent composition of oxygen is =?

Q: what is the mass percentage composition of the elements in the following compounds? Round to the…

A: mass percentage composition can be calculated by  mass % = mass of atom in compound X 100 / mass of…

Q: The number of moles in 36 grams of water is O 2 1 O 20

A:

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.