15. What is the formula for a compound formed from aluminum and oxygen? a. Al302 b. Al204 C. Al303 d. Al203 e. AIO a d. e

Q: 16.The atomic masses of * Cl (75.53 percent) and "Cl (24.47 percent) are 34.968 and 36. 956 a.m.u.,…

A: Introduction: Chlorine belongs to group 17 elements with atomic number 17 and mass 35.45 amu. Group…

Q: The ionized form of ferrous oxide is a. Fe*2: 02 O b. Fe*3: 0-2 O c. Fe*2: 03 o d. Fe*3, 03 +3.

A: In this question, we will see what is the ionized form of Ferrous Oxide  You can see details…

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

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Q: 1. Calculate the mass in grams of a single oxygen molecule, 02.

A: Molar mass of O2 is 32.0 g/mol  We have to calculate here mass of 1 molecule of oxygen i.e. O2

Q: Determine the number of moles of phosphorus in 7.722 g of Zn3(PO4)2.  [Mr (Zn3(PO4)2) = 386.1 g…

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Q: 22 11. Find the mass in grams of 2.54 x 10 molecules of H,SO,.

A: Number of molecules of H2SO4 = 2.54 × 1022 molecules. Mass of H2SO4 (in grams ) = ?

Q: H 1.008 3 Li Be 6.94 9.012 11 12 Na Mg 22.990 24.305 Select one: O a. O b. Si-P c. Si-Se O d. Si-S…

A: We have been given four bonds and we have been asked which of these four bonds would have greatest…

Q: The reaction of sulfur powder (S8) with oxygen gas (O2) results in the formation of one of many new…

A: We know that, molar mass of O = 15.999 g/mol molae mass of S = 32.065 g/mol

Q: 1. In: X2 + 2NaY ----- Y2 + 2 NaX (X,Y: Cl, Br. I), If: X2 represents the Cl and Y2 is Br; then, X…

A: X2 + 2NaY = Y2 + 2NaX  Here displacement reaction is carried out.  When two halogen molecules reacts…

Q: Which of the compounds is an ionic salt? A. CIO₂ B. CCIA C. NO₂ D AIP

A: Salt : A salt is formed by a reaction of acid and base (i.e. a salt is formed by the neutralisation…

Q: A. Br HBr (excess) پنی من من بنے Br B. Br Br Br Br + Br Br D. Br Br

A: Addition reaction of HBr to an alkyne

Q: What mass of carbon (am-12.01 g/mole) is in 9.33 g of C2H60 (mm-46.07 g/mole) O A.2.43 g 4 OB. 7.23…

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Q: Hydrogen can either form an ion as H+ or as H−. a.  How many protons and electrons are present in…

A: An atom is mainly composed of three sub-particles; electrons, protons and neutrons. In an atom,…

Q: Which of the following will react with Mg (s)? a.Co(NO3)2(aq) b.FeCl2 (aq) c.NaC2H3O2(aq)…

A: More electropositive metal can replace less electropositive metal by redox reaction. In redox…

Q: CHEMISTRY 3A - WORKSHEET 5 --- CHAPTERS 3 and 12 1. Name the following compounds. MgF2 a. P2O5 SiO2…

A: According to guidelines i can answer only first question, please repost the other one.

Q: 4. Suppose you have a mixture that weighs 6.00 g. In the mixture you 2.50 g of iron and 3.50 g of…

A: The total weight of mixture is 6.00 g. The mass of iron and sulfur present in mixture is 2.50 g and…

Q: d. e. CN NO₂ 1. Os04 2. NaHSO4 Cl2, AICI3

A: OsO4 is used for dihydroxylation of alkenes, NaHSO3 is a mild reducing agent which again forms the…

Q: CF3 N SE ********* 1. NaNH, 2. Cl

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Q: 11. Given the reaction: Al+ He-X+n When the equation is correctly balances, the nucleus represented…

A: Hi, since you have posted multiple questions. We will answer the very first question for you. Kindly…

Q: 25. Lactic acid (also known as milk acid) is composed of only carbon, hydrogen, and oxygen and has a…

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Q: A 3.17 g sample of nitrous oxide (an anesthetic sometimes called laughing gas) contains 4.34 x 1022…

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Q: Write the chemical formula for a compound containing the following elements: arsenic and oxygen; 4:6…

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Q: What is the average mass (in grams) of a single nitrogen dioxide molecule? A. 3.6 x 10-26 g B. 2.77…

A: Since mass of 1 molecule  = molar mass / Avogadro's number Molar mass of Nitrogen dioxide (NO2) = 14…

Q: A 2.41 g sample of nitrous oxide (an anesthetic sometimes called laughing gas) contains 3.30 x 102…

A: Given: Number of molecules of N2O =3.30×1022 molecules And mass of N2O sample =2.41 g

Q: 1. Calculate the formula mass of (NH4)3ASO4. A. 417.80 amu B. 193.05 amu C. 165.02 amu D. 156.96 amu…

A: 1. Formula mass of a compound is the sum of the masses of all the atoms present in the compound.

Q: 1. 2 moles of Ar atoms contain how many atoms?           A.   1        B.   1.204 x 1024…

A: Mole concept: The number of molecules or atoms present in the one mole of the substance is equal to…

Q: 9. Determine the molar mass (also called formula weight) of the following compounds: a. СаCl, b.…

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Q: 3)b. FePO4*6 H2O d. CUCN f. CuSO4 * 5 H2O h. Sn(SO4)2 j. Mn(CH3CO2)2 1. Hg(NO3)2 * H2O n. CRSO4 *…

A: Chemical name  of following compounds

Q: The density of water, H₂O(1), is 1.0 g ml.. How many atoms of oxygen are present in 2.5 L of pure…

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Q: Which of these synthetic transformation require a radical halogenation step? (Please consider only…

A: The transformations in which tge product has more number of carbons than the reactants may require…

Q: 14 Which chemical formula is correct Magnesium Selenide? C. Mg2Se3 D. Mg4Se₂ A. MgSe B. Mg₂Se 15…

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Q: A 2.62 g sample of nitrous oxide (an anesthetic sometimes called laughing gas) contains 3.59 x 1022…

A: Given  (a)   Mass = 2.62 gram       Number of molecule of N2O  =  3.59 × 1022 molecule       Number…

Q: c. chlorine trifluoride CIF3 d. Iodine disulfide I,S,

A: See explanations

Q: How many gold (Au) atoms are there in a 10. g sample of that is 50% Au by mass?  a. 6.2 x 1022 b.…

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Q: What mass of sulfur dioxide, SO2, would contain the same mass of oxygen as is contained in 33.7g of…

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Q: A compound is composed of 57.51 % carbon, 1.63% H, 18.89% N, 13.05 % O, and the remainder other…

A: Given , A compound contains 57.51 % carbon , 1.63 % H , 18.89 % N , 13.05 % O and remainder are…

Q: The average atomic mass of carbon is 12.011 amu. Assuming you were able to pick up only one carbon…

A: Given that, the average mass of carbon is 12.011 a.m.u. The given mass of any of the carbon isotopes…

Q: 30. In calcium carbonate what is the mass percentage of  oxygen atoms?    A. 68%   B. 12%   C.…

A: Calcium atomic mass = 40. Carbon atomic mass =12. Oxygen atomoic mass = 16. Here three oxygens are…

Q: A compound is composed of 48.88 % carbon, 7.75% H, 25.42% N, 12.54 % O, and the remainder other…

A: Calculating mass of carbon. Mass percentage of carbon/Total mass of the given compound*100

Q: How many grams of magnesium are required to produce 3.000 kg of Si? (At mass: Mg=24.31; Si=28.09)…

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Q: 18. What is the number of grams of N2(g) that contains 9.02 x 1023 molecules? A. 18.7 grams B. 42.0…

A: Given the number of molecules of N2(g) =9.02×1023 moleculeswe are asked to calculate the amount of…

Q: 1. Hydrogen fluoride HF 2. Magnesium chloride (MgCl.) in Water 3. Hydrogen bromide HBr 4.Silicon…

A: Compound Types of Intramolecular force/ chemical bond Strongest type of intermolecular bond present…

Q: 1. Which statement best describes molar mass? a. the mass of 6.02 x 1023 atoms, which is constant…

A: Disclaimer:Since you have asked multiple questions, we will answer the first 2 questions for you. If…

Q: Nomenclature 71. Name the compounds in parts a-d and write the formulas for the compounds in parts…

A: Explanation Inorganic nomenclature To name a binary non-metal compound name each element in the…

Q: 6 What is the mass of 2.0 billion billion atoms of gold? (1 billion is 1 x 10^9, so a billion…

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Group 15 elements

The elements of group 15 are phosphorus, nitrogen, bismuth antimony, and arsenic. The most abundant element which is present in the air is nitrogen and the percentage of nitrogen present in the air is 78%. In the free state, the elemental nitrogen is present as diatomic gas (N2). In the organic matter obtained from plants and animals, phosphorus is the dominant element present. In nucleic acids, phosphate groups are present. Phosphates are also found in teeth and bones. The other elements arsenic, bismuth, and antimony are found as sulfides. Arsenopyrite, bismuth glance, and stibnite are examples of sulfides of arsenic, bismuth, and antimony respectively.