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Q: Calculate the number of moles in each sample. a. 72.5 g CCI4 c. 25.2 kg C2H2 b. 12.4 g C12H22011 d.…

A: The number of moles of a substance is calculated by dividing the given mass of that substance with…

Q: The use of freons is being phased out because of the damage these compounds do to the stratospheric…

A: a.

Q: Silver nitrate reacts with nickel to form Ni(NO3)2 and silver. To produce 0.7kg of silver, how many…

A: Since you have asked multiple type questions, we will solve only first  questions for you. If you…

Q: Rearrangements o Hydride Shift: Hydrogen moves from one part of the molecule to another. CH₂ H₂C.…

A: We have to draw mechanism

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: a. Oxalic acid is a crystalline solid with the molecular formula H2C2O4. A sample of pure oxalic…

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Q: Hemoglobin (molar mass = 64,000 g/mol) is the major component of red blood cells that transports…

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Q: Which of the following shows a correct setup? O1.45 mol Ca x- 40 g Ca X1 mol Ca O1.45 mol Ca x Са хт…

A:

Q: A molecular compound is found to consists 30.4% nitrogen and 69.6% oxygen. if the molecule contains…

A: Given Composition of N = 30.4 % Composition of O = 69.6 %

Q: Which of the following statements is not correct? A. 12.01 g of C contains 6.022 x 1023 atoms of C…

A: 1 mol of any substance contains Avogadro's number of particles (atom/ion/molecule etc.). Avogadro's…

Q: When the supply of oxygen is limited, iron metal reacts with oxygen to produce a mixture of FeO and…

A: Amount of iron = 20.00 g Amount of oxygen gas = 11.83 g Atomic weight of iron = 55.847 g We have…

Q: 8. KI 9. NaCI 10. Mg Cl2 11. Na;N

A: 8) KI : In the compound we have metal cation K+ from s block and I- anion. Since in the naming of…

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: 719.03 g 35.00 mL 708.4 mol 0.67 L 2.09476 mol L x 3.95 L H = 0 mL mol mol

A: Rule for significant digits in multiplication and division.The answer should have the same number of…

Q: 4.00 g of a certain Compound X, known to be made of carbon, hydrogen and perhaps oxygen, and to have…

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Q: If a red blood cell is placed into a solution with a low concentration of salt, what type of…

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Q: Which mixture can be separated into its components by adding water then filtration? a. Potassium…

A: Given statement is  :  Which mixture can be separated into its components by adding water then…

Q: 6.50 g of a certain Compound X, known to be made of carbon, hydrogen and perhaps oxygen, and to have…

A:

Q: 6. How many oxygen atoms are in 225 g oxygen gas? a. 4.23 x 104 C. 8.47 x 10:+ b. 6.84 x 10²4 d.…

A: The Given amount of oxygen gas O2 = 225 grams        the molar mass of O2 = 32 g/mol To calculate…

Q: How many oxygen atoms are present in 3,0 x 1023 molecules of Ca(NO3)2?   A. 6.0 x 1023   B. 1.5…

A: 1 molecule of Ca(NO3)2 have 6 oxygen atoms as NO3 have 3 oxygens and (NO3)2 will have 3 x 2 = 6…

Q: What is the mass of aluminum oxide (101.96 g/mol) produced from 3.59 g of iron(II) oxide (71.85…

A: Given :-  Unbalanced chemical equation :-  __FeO(l) + __Al(l)  → __Fe(l) + __Al2O3(s)  Amount of FeO…

Q: How many atoms Na are in 1.4 g of Na?     a. 3.7 x 1022 atoms Na   b. 1.0 x 10 -25 atoms Na…

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Q: 1.50 g of a certain Compound X, known to be made of carbon, hydrogen and perhaps oxygen, and to have…

A: Step 1: Step 2: Step 3: Step 4:

Q: An unknown compound comprised of osmium and chlorine is 40.11% osmium by mass. a. If you assume…

A: Hello. Since the question contains more than three sub-parts, the first three sub-parts shall be…

Q: A compound of hydrogen and carbon is 92.3% carbon, If 40 g of hydrogen is reacted with 135 g of…

A: Molecular mass is the sum of the masses of all the atoms in a given molecule. Percentage composition…

Q: CHISE alum (KCr(SO, 12H,0).(Mm alum =499g/mol), Calculate the mass of water in 189 g sample of this…

A: In 499 g of alum, the amount of water is 216 g.

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: How to solve number 1 step by step

A: mass of chlorine reacted during the reaction= 8.178-6.867                  = 1.311g  Atomic Mass of…

Q: An experiment was performed in lab to produce 10.3 grams of Ca(OH)2, however the calculations…

A:

Q: Calculate the mass of one bromine atom. a. 6.022 x 1023 g O b.4 812 x 1025g O c. 1.327 × 10-22 g O…

A: Atomic mass is defined as the quantity of matter that is present in an atom of element.

Q: A chemical reaction was used to produce 1.61 moles of copper (II) bicarbonate, Cu(HCO3)2. What mass…

A: Given data:

Q: which of the following has the greatest number of particles? a. 76 g of Mg(OH)2 b. 2.95 g of H2 c.…

A: a) To determine the number of particles in 76 g of Mg(OH)2, no. of moles = given massmolar mass= 76…

Q: Write the chemical formula for each compound, and then calculate the amount in moles in each sample.…

A: Given: Mass of copper(II) sulfate pentahydrate = 78.1 kg

Q: The element rhenium (Re) has two naturally occurring isotopes, 185 Re and 187 Re. Rhenium is 62.60%…

A:

Q: 5.00 g of a certain Compound X, known to be made of carbon, hydrogen and perhaps oxygen, and to have…

A:

Q: HCI and Cl₂ in the equation 4HC1(g) + O2(g) → 2C12 (g) + 2H₂O(g) 1 mol HCI 1 mol Cl₂ 2 mol HCI 1 mol…

A: The objective of the question is to determine the number of moles of HCl and Cl₂ involved in the…

Q: A sample of ammonia has a mass of 96.3 g. How many molecules are in this sample? A. 5.65 molecules…

A: One mole of any substance consists of 6.022×1023 molecules. The number of moles of a substance can…

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: An analytical chemist measures the amount of Elements E, and E₂ in four samples of an unknown…

A: Since the unknown substance, X contains elements E1 and E2, it can be either a compound of E1 and…

Q: 2.09 mol - x 2.70 L = 0 mol L 502.8 mol 0.45 L = 0 78.1 mol L mol L x 83. L = mol

A: During multiplication and division, the final answer should have the fewest number of significant…

Q: Let’s put the above values into the formula: V1 = 8.00 mol.L-1 × 2.42 L13.0 mol.L-1V1 = 8.00…

A: The dilution equation is expressed as C1×V1=C2×V2On rearranging the above equation to get V1…

Q: An analytical chemist measures the amount of Elements E₁ and E₂ in four samples of an unknown…

A: Since the unknown substance, X contains elements E1 and E2, it can be either a compound of E1 and…

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: Write the chemical formula, then balance the chemical equation. Step by step A. Sodium reacts with…

A: Balanced chemical reaction is the chemical equation that contains an equal count of atoms of every…

Q: Calculate how many water molecules there are for 1000g of water, H2O. A. 3.34 x 1025 water…

A: Given : Mass of H2O = 1000 g

Q: How many molecules are in 98.70 grams of Ba (SO4)?   A. 2.5 x 1023 molecules Ba (SO4)   B. 0.6 x…

A: Molar mass of BaSO4 = 233.38 g/mol  Mole = given mass/molar mass

Q: A 0.500 g mixture of Cu₂O and CuO contains 0.425 g of Cu. What is the mass of CuO in the mixture?…

A:

Q: A mixture of 165.7 g of Cl2 and 36.2 g of P reacts completely to form PCl3 and PCl5. Find the mass…

A: Given - Mass of Cl2 = 165.7 g             Mass of P = 36.2 g

Q: What amount (moles) is represented by each of these samples? a. 102.9 g Fe2O3 mol b. 34.6 mg NO2 mol…

A: 1) No. Of moles of Substance = Given Mass of substance / Molar mass of substance    2)  No. of moles…