What is the number of molecules in 319g of Li2SO4? (Take NA = 6 x1023)

Q: Determine the number of molecules in 23.6 grams of CH₄.

A: Given : Mass of CH4 = 23.6 g

Q: Determine the number of atoms in 55.0 grams of sodium, Na. (The mass of one mole of sodium is 22.99…

A: Here given, the mass of one mole of sodium is 22.99 g. So, in 55 grams of sodium, there are…

Q: 48. How many molecules of caffeine, C4HSN2O, are there in 18 g of caffeine? a. 1.12 ×10E23 b. 1.05…

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Q: What about the percent N in the ammonia ion NH4+?

A: Ionic weight of ammonium ion, NH4+ is 18.04 amu.

Q: Consider this chemical reaction: 2 MnI2(s) + 13 F2(g) 2 MNF3(s) + 4 IFs(1) If 83.5 kilograms of…

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Q: Supply the structures of compounds A–I in the following synthesis scheme.

A: Alkane reaction with br2 leads to bromination and then reaction with (CH3)3COK abstract the proton…

Q: 3. A sample of sugar, C.H12O6, has a mass of 90.0 g. It has the same number of molecules as A) 45 g…

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Q: Ascorbic acid ( vitamin C)  molar mass 176g/mol   A healthy adult's daily requirement is 70-90 mg a…

A: The daily requirement of vitamin C for a healthy adult's  is = 70-90 mg The molar mass of vitamin C…

Q: A 0.7547 g sample of nicotine was analyzed and found to consist of 0.5588 g C, 0.06565 g H, and…

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Q: How many atoms of oxygen are present in 12.5g of nitrogen dioxide?

A: Given: Mass of nitrogen dioxide (NO2) is 12.5 g. To find: Number of oxygen atoms.

Q: A 69.56 g sample of SOCI2 reacts with 13.93 g of CO2 to form SO2 and CCI4. 2 SOCI2 (1) + CO2 (g)…

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Q: Determine the number of atoms of H in 36.1 grams of C6H12O6

A: We have to calculate the number of atoms in given mass of glucose.

Q: H2 SO4 + 2 NaCl 2 HCl + + Naz SO4 O 2 mol H2 SO4 2 mol HCl 2 mol HCI 1 mol H2 SO4 2 mol NaCı 2 mol…

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Q: Determine the number of CH;Clz molecules in 25.0 g CH;Clz. a) 0.294 molecules c) 1.28 x 1027…

A: Number of moles of CH2Cl2  is equal to the mass of CH2Cl2 divided by its molar mass.

Q: a) Determine the mass of O is that combined with 3.00 g of N in NO and NO2. b) Describe that NO and…

A: Two questions based on general chemistry, which are to be accomplished.

Q: Determine the number of atoms of C in 43.7 grams of C₆H₁₂O

A: Atom is composed of neutrons, protons, and electrons.

Q: . How many MOLECULES of water are present in 9.27 grams of this compound?

A:

Q: A) Suppose one molecule of Chlorophyll X contains 5 oxygen atoms. Chlorophyll X is 8.95% oxygen by…

A: Molecular mass of Chlorophyll X can be found out by using the mass percentage of Oxygen and number…

Q: 35 Consider the following balanced chemical reaction: (27.74 g C3H6O) + (61.12 g 0₂) --- >(x g CO₂)…

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Q: The density of water is 1.00 g/mL at 4°C.How many water molecules are present in 2.36 mL of water at…

A: given density of water = 1 g/ml

Q: Estrogen (estriol) is a steroid that has the formula C18H2403. What is the mass of carbon in a 50.0…

A: Given:  Molecular formula of estrogen= C18H24O3  Mass of estrogen given= 50g

Q: A 85.6 g sample of Fe304 reacts with 18.2 g of CO to form FeO and CO2. FezO4(s) + CO(g) 3FEO(s) +…

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Q: CIF 3(9) AH = ? 2.) CIF9) + F2(g) AH = - 49.4 kJ 20F2(9) Ozlg) + 2F2(9) AH= 205.6 kJ Cl,0(9) +…

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Q: For each reaction, predict the sign and find the value of ΔS°:

A: Given:-                     a    3NO2g +H2Ol  →2HNO3l +NOgb   N2g +3F2(g)   →2NF3gc   C6H12O6s +6O2g…

Q: Calculate the number of moles in each sample.a. 72.5 g CCl4                            b. 12.4 g…

A: The number of moles is calculated as shown below.

Q: What is the percent by mass of hydrogen in Ca(OH)2? Group of answer choices 2.72 % 1.36% 21.6 %…

A: % by mass basically tells about the concentration of one element present in the mixture. The formula…

Q: 10. One mole of Sulfur is 32.06 g. How many moles would be found in: a. 85.9 g of Sulfur b. 10.57 g…

A: given 1 mole sulfur = 32.06 g

Q: How many grams of Ca(NO3)2 contains 36 grams of oxygen atoms? (A) 15 g (B) 30. g (C) 24.5 g (D) 37…

A: molar mass is defined when we take mass for only one mole ie, for 6.023 ×10-23 atoms. If we have to…

Q: Pre-Lab Questions "Counting by weighing" is used in other applications besides chemistry. A hardware…

A: Given, Hardware sells nails in package of 500. Office supply store sells 100 paper clips.

Q: A sample of a compound has a mass of 41.13g. The sample is found to contain 37.28 g of carbon and…

A: Answer: option 2) 90.6% Carbon and 9.4% Hydrogen

Q: A sample of methane, CH4, has a mass of 58.25 g. Calculate the number of methane molecules in the…

A: Given mass of CH4 = 58.25 g Molar mass of CH4 = 16.04 g

Q: A certain ore is 30.3% nickel by mass. How many kilograms of this ore would you need to dig up to…

A: Introduction: We have to calculate the mass of ore.

Q: A sample of trifluoroacetic acid

A: Atomic mass of C = 12 amu Atomic mass of H = 1 amu Atomic mass of F = 19 amu Atomic mass of O = 16…

Q: One millimeter of water contains about 20 drops. One gram of water contains 3.34x10^22 molecules of…

A: One millilitre of water contains about 20 drops. One gram of water contains 3.34×1022 molecules of…

Q: What is the percentage by mass of a silver ring that has a mass of 12.0 g and contains 11.1 g of…

A: Total mass of the silver ring = 12g  Mass of pure silver in the ring = 11.1g  Formula to find the…

Q: A balanced chemical equation contains the term "2Ba(OH)2⋅8H2O." How many atoms of each element does…

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Q: How many grams of hydrogen is produced from 194 g chromium? 2Cr + 2H3PO4 ⟶ 3H2 + 2CrPO4 77.4 g…

A: The balanced reaction taking place is given as, => 2 Cr + 2 H3PO4 ⟶ 3 H2 + 2 CrPO4  Given : Mass…

Q: Determine the number of atoms in 27.0 grams of bromine, Br. (The mass of one mole of bromine is…

A: Given : mass of 1 mole of bromine i.e Br = 79.90 g And mass of Br = 27.0 g

Q: The number of molecules in 0.556g of PF6 is

A: We have given that Mass of PF6 = 0.556g Molar mass of PF6 = 144.9642 g/mole No. of mole of PF6 =…

Q: A) 6.81 x 1022 molecules B) 3.40 x 1022 molecules C) 8.91 x 1022 molecules D) 1.75 x 1022 molecules…

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Q: number of atoms in a 3.37×1033.37×103 g sample of carbon

A: 3.37×1033.37×103 g sample of carbon = 358693.061 g sample of carbon = 3.58 x 105 g sample of carbon

Q: What percent by mass of iron(II) phosphate is iron? a.46.9 b.73.2% c.24.3% d.33.7%

A: Determination of percentage of iron in iron(II) phosphate

Q: A typical cup of coffee has about 100. mg of caffeine. Calculate the number of caffeine molecules in…

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Q: 4. One mole is equivalent to a. 3.75 g Hydrogen c. 16 g Oxygen b. 14 g Carbon d. 190 g Gold 5. What…

A: Answer  4 ) one mole is equivalent to        c) 16g  oxygen  1 mol is  equal to 6.022×1023 (…

Q: Vitamin C has a formula of C6H8O6, calculate the number of vitamin molecules present in a 0.250g of…

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Q: A sample of a compound has a mass of 41.13g. The sample is found to contain 37.28g of carbon and…

A: Percent composition of the compound is described as the percent of mass of each component of the…

Q: A sample of methane, CH4, has a mass of 38.75g. Calculate the number of methane molecules in the…

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

Q: How many MOLECULES of water are present in 9.27 grams of this compound? A 7.10 x 1023 molecules H20…

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.