What is the mass of 0.5 mole of nitrogen gas? O 1.20 x 1023 O 28.0 g O 14.0 g O 6.02 x 1023 3.01 x 1023 g

Q: Considering the chemical equation below 4 NH3 + 5 O2 -4 NO + 6 H20 Suppose a vessel contains 6.45 g…

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Q: many moles are in 38.9 grams of Al? Atomic weight of Al=26.98

A: Mass of Al = 38.9 g Atomic weight of Al = 26.98 g/mol Mole(n)= Mass(m)/Atomic weight

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A: Given data contains, Mass of nitrogen=16.9g Mass of hydrogen=16.9g Molar mass of nitrogen=28g/mol…

Q: Write a balanced chemical equation for: Sulfur dioxide gas reacting with oxygen gas to form sulfur…

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Q: Equivalent weight of Al(OH)3 is а. 39 g O b. 27 g O c. 78 g O d. 26 g

A: Option d) 26 g

Q: 12. What mass of carbon di a. 0.468 g b. 2.81 g

A: Given reaction,  C6H14 + 13CO2 -------->6CO2 + 7H2O we have to find mass of CO2 produced by 5.50…

Q: A 2.05 g sample of an unknown compound contains H, S, and O. If the compound contains 0.050 g H and…

A: This question is related to stoichiometry. Percentage composition telle us about the percentage of…

Q: please help me, double and triple check your answers, previous tutors got it wrong so check it.

A: Calculation for moles of Ne: Calculation for moles of Kr: Calculation for moles of Ar:

Q: Citric acid, CH,O,, is found in many fruits How many H atoms are contained in 0.1g of citric acia…

A: Given : Mass of citric acid = 0.1 g

Q: 60. Lithium and bromine combine to form lithium bromide, as shown here. If 30 moles of Li react with…

A: 2Li(s) + Br2(l) ----> 2LiBr(s) ............(equation-1) Moles of Li = 30 mole

Q: If you begin with 19.76 grams of Al(s) and 15.14 grams of O2(g) , how many grams of Al2O3(s) can be…

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Q: 2 N2O5 4 NO + 3 O2 Suppose that 3.23 g of O2 are obtained. How many grams of nitrogen monoxide, NO,…

A: In  this question, given equation  2N2O5  → 4NO+3O2Given data weight of O2=3.23 g molar mass of O2=…

Q: If 9.05 moles of carbon monoxide is formed in the air then mass of carbon monoxide is (A) 253.49 g…

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Q: A 12.39 g sample of phosphorus reacts with 42.54 g of chlorine to form only phosphorus trichloride…

A: Given: mass of P = 12.39 g mass of Cl2 = 42.54 g molar mass of P = 30.97 g/mol molar mass of Cl2 =…

Q: Cu(k) + HNO3 → Cu(NO3)2 + NO2(g) + H2O(s) at 735 mmHg pressure at 28 ˚C, 4.95 cm3 of copper (d= 8.95…

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Q: How many atoms are in 25.6 g tin? O 3.01 x 1023 atoms O 3.01x 1024 atoms O 6.02 x 1024 atoms O 1.30…

A: Given data:  Mass of tin = 25.6 g Standard data:  The molar mass of tin = 118.71 g/mol

Q: "If you begin with 202.2 grams of aluminum, how many grams of aluminum oxide can be formed? 4 Al(s)…

A: Given, 4 Al(s) + 3 O2(g) → 2 Al2O3(s) mass of aluminium (Al) react = 202.2 g mass of aluminum oxide…

Q: 45. What volume of 3.0 M NaOH can be prepared using exactly 96.0 g of NaOH? А. 0.14 L В. 0.70 L 0.80…

A: Given data :  1. Concentration of NaOH = 3.0 M  2. Mass of NaOH = 96.0 g NaOH  To calculate : Volume…

Q: What is the mass of 2.2 x 10 ° CO 2 molecules? O a. 1.0 x 10-12 g O b.1.6 x 10-13 g O. 12x 106 g O…

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Q: 4.39 x 10^27 P4 O10 molecules = Atoms

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Q: Calculate the number of oxygen atoms in 25.1 g of nitrous acid. 4.80 x 1023 oxygen atoms O 6.43 x…

A: Given,  Mass of nitrous acid = 25.1 g

Q: NH3 + O2 → NO + H2O For every 150 g NH3,   Find the mass of NO produced. _________ Find the mass…

A: Given, mass of NH3 = 150 g  Molar Mass of :: N: 14.01 g/molO: 16 g/molH: 1.01 g/mol

Q: Part 2 O See Hir Consider a sample of gas that contains 625 moles of smokestack gas. How many…

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Q: How many grams of C3H&O are in 5.00 x 1022 molecules? O 29.9 g O .083 g O 4.99 g 50.0 g

A: Calculate the number of moles of the compound. Number of moles = Numer of moleculesAvogadro's…

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: If 1.5 moles of carbon dioxide, CO2, was produced, how many grams of water was also produced= CH1206…

A: Recall the given reaction        C6H12O6s + 6O2g → 6CO2g + 6H2OgHere 1.5 moles of CO2 was…

Q: What is the amount, in moles, of each of the following substances? A)12.6 g Ar B)3.50 g Zn C)26.5…

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Q: Is the number of atoms in 0.64 grams of helium gas equal to the number of atoms in how many grams of…

A: Solution stoichiometry involves the calculation of the concentration of solutions in the given…

Q: 38. How many grams of hydrogen are there in 2.5 g of water? b. 0.28 g a 3.5 g c. 0. 95 g d. 2.22 g

A: Given data  Given mass of water=2.5g Grams of hydrogen=??

Q: How much zinc oxide powder should you add to 2 oz (AV) of 5% zinc oxide (Zno) ointment to make a 10%…

A: We will calculate amount of ZnO in 5% ointment , then calculate amount of ZnO added to it to make it…

Q: 5) 25 grams of PbSO4 is equivalent to how many moles? a) 0.0824 b) 1.21 c) 1.56 d) 1.98

A: Given data: Grams of PbSO4= 25 g. To find: The number of moles of PbSO4.

Q: O 2 AL +bNaoA2Nag Alo+ 3Hz what The volume of hydrogen when 299 of Aluminium. fAl=24)_veat wiTh…

A: 4) Step 1 - Convert percentage of element into grams mass of Sulphur = 40.56 g mass of Oxygen =…

Q: What is the mass, in grams, of 6.52 moles of hydrogen gas? Select one: a. 3.93e24 g b. 13.1 g c.…

A: The mass of hydrogen gas is calculated as shown below where n is the number of moles and M is the…

Q: How many grams of Zn are in 0.256 mol Zn? O 16.7 g O 1.67 g O 0.004 g 0.256 g 2.56 g

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Q: 4 Fe +3 0,-> 2 Fe,O, If I have 6.21 liters of oxygen gas, how many moles of iron (III) oxide will I…

A: At STP, 1 mole oxygen = 22.4L  From given data, amount of oxygen=6.21L  So, moles of oxygen =…

Q: How many atoms are in 25.6 g tin? O 1.30 x 1023 atoms O 3.01 x 1024 atoms O 3.01 x 1023 atoms O 6.02…

A: Moles of tin are, Moles = mass ÷ molar mass Moles = 25.6 g ÷ 118.71 g/mol Moles = 0.22 mol

Q: What is the mass of 3.65 moles of sodium bicarbonate? 307 g 87.8 g O 486 g O 84.0 g O 106 g

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Q: A chemist adds 1.15 L of a 3.58 x 10 -5 mol/L mercury(II) iodide (HgI,) solution to a reaction…

A: Volume of HgI2 = 1.15 L Molarity of HgI2 = 3.58×10-5  mol L-1 Molar mass of HgI2 = 454.4 g mol-1

Q: Which of the following is equal to 6.022 x 10^23 molecules? * 31.98 g Q_2

A: We will choose Correct statement

Q: 10 gram of which substance contain the greatest number of Hydrogen Atoms? A. 10 grams of CH4 B. 10…

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Q: What is the total number of atoms contained in 2.00 moles of iron? O 118 O 6.02 x 1023 O 1.2 x 1024

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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: How many atoms are contained in 12 g of water? O 2.4 x 1024 O 1.2 x 1024 4.0 x 1023 O 1.3 x 1023

A: To calculate the number of atoms in 12 g of H2O Molar mass of H2O = 18 g/mole Now we calculate moles…

Q: What is the mass of 4.63 x 1012 atoms of Fe? O 8.96 x 10-10 g O 4.29 x 10-10 g O 2.73x 10-10g O 1.62…

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Q: What is the mass of 0.560 moles of chlorine gas?   A. 19.9   B. 63.3   C. 127   D. 39.7…

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Q: When copper is heated with an excess of sulfur, Cu 2 S is formed. How many grams of Cu 2 S could be…

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Q: 6. How many oxygen atoms are there in 2.5 g of oxygen gas? a. 2.4 x 1022 b. 4.7 x 1022 c. 9.4 x 1022…

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Q: The number of oxygen atoms in 20.18 grams of Al(NO3); is: O 1.712 x 1023 O 0.09474 5.135 x 1023 O…

A: molecular mass of Al(NO3)3 = 213g no of atoms in 1 mole Al( NO3)3 = 6.023X1023 X 6 atoms no of moles…

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.