PT 1. If you have 19.70 g of copper (II) of sulfate, how many moles of CUSO4 do you have? PT 2. How many formula units of CUSO4 are there in the 19.70 g sample of CUSO4 in pt 1?

Q: The formula for disulfur decafluoride is S2F10 . a. How many molecules are in 1.57 grams of disulfur…

A: a) Given: 1.57 g of S2F10. The no of molecules are determined as follows,

Q: An ionic compound MX3 is prepared according to the following unbalanced chemical equation.   M  +…

A: The number of moles of X2 (nX) is calculated using equation (1) in which N is the number of…

Q: Part 1: Calculate the mass percentage of N in N2O4. Report your answer to 3 significant figures.…

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Q: Suppose you isolate an acid from clover leaves and know that it contains only the elements C, H, and…

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

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Q: Consider the reaction: P4(s) + 6Cl₂(g) → 4PC13 (1) Given an initial mass of 15.75 g P4, an excess of…

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Q: What is the formula weight (in g/mol) of copper(II) nitrate trihydrate, Cu(NO3)2 3H₂O? Give your…

A: For the first question, we have to find the formula weight (in g/mol) of copper (II) nitrate…

Q: A grain of sand weighs 7.7 × 10−4 g. How many formula units of silicon dioxide, SiO2, are in one…

A: The mass of one formula unit of SiO2 = 60.08 g/mol

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: In a chemical reaction, sulfur goes through a combustion reaction and produces sulfur trioxide as a…

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Q: A 0.720 mol of Ca3(PO4)2 sample weighs how much in milligrams? What is the mass in grams of…

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Q: 6. A student reported the following percentages for his unknown mixture: 25% NH4CI, 30% NaCI, and…

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Q: What is the mass percent of silicon dioxide (SiO2) if you are able to separate 2.202g out of a…

A: The mass percentage of a compound in a mixture is equal to the ratio of the mass of that compound…

Q: 7. Consider the following reaction: 2 NaOH(s) + CO2(g) → Na2CO3(s) + H;O(1) 5.73 g of NaOH are…

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Q: 2Na + Cl2 → 2NaCl. If I want to make 100.0 g of salt, how much elemental chlorine would I need?

A: First convert mass into molar mass  Then use mole-mole relationship  After getting mole of  Cl2 then…

Q: How many grams is equivalent to 1.204 x 1024 molecules of NH3? How many moles are there in 584 g of…

A: 1 mol = Avogadro's number molecules            = 6.022 * 10 23 molecules  Moles = weight / molar…

Q: the formula for disulfiram decafluoride is S2F10   A.How many molecules are in 1.35 grams of…

A: A.

Q: The molar mass of one empirical unit of the antidepressant rolicyprine (C7H&NO) is 122.1 g/empirical…

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Q: The mass, in grams, of 1.5 x 10-2 mol of CdS. The number of moles of hydrogen in 86.6 grams of…

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Q: 3. What is the mass (in kg) of 6.89 x 1025 molecules of CO2? The molar mass of CO2 is 44.01 g/mol.

A:

Q: 3. A student heated an unknown hydrate, Na,SO4•XH,O, in a crucible. The water was driven off,…

A: The reaction when Unknown hydrate is heated – Na2SO4.XH2O →∆Na2SO4 +X H2O

Q: A combustion analysis is a technique to find the the empirical formula of compounds.  In a…

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Q: Hemoglobin, a protein in red blood cells, carries O₂ from thelungs to the body’s cells. Iron (as…

A: It is given haemoglobin that haemoglobin has a molar mass of 6.8×104g/mol and the mass percentage of…

Q: You have 235.5 g of Ba(OH)2   How many moles of barium hydroxide, Ba(OH)2, are present in 235.5…

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Q: Consider a 134.5 g sample of the compound manganese(IV) perchlorate. Using the formula Mn(ClO₄)₄ (MM…

A: Weight of sample = 134.5 gm  Molar mass of MN(ClO4)4 = 452.74 g/mole

Q: A 6.40 g sample of a compound is burned to produce 8.37 g CO, 2.75 g HO, 1.06 g N, and 1.23 g SO.…

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Q: Compound Z is a chemical naturally found in peppermint and other mint plants and has mild anesthetic…

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Q: An organic compound contains Carbon, Hydrogen, and Oxygen. The percentages of H is 6.73%, 39.99% C…

A: Given : Mass percent of C = 39.99 % Mass percent of H = 6.73 % Mass percent of O = 53.28 % Assuming…

Q: Carbon tetrachloride was prepared by reacting 23.6 g of carbon disulfide and 47 g of chlorine gas.…

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Q: Mass (in grams) of 1.00×10−2 molof CdS. Express the mass in grams to three significant digits.…

A: The mass in grams is calculated for CdS as shown,

Q: A 3.750 g sample of the compound responsible for the odor of cloves (containing only C, H, and O is…

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Q: 6) How many grams of cobalt are in 356 g of Co(NO3)2? 7) How many grams of sodium are in 1.50 kg of…

A: It is applicable of percentage composition where we are required to find the mass of a particular…

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.