ic & Gases The formula mass of zinc acetate dihydrate, Zn(CH3COO)2• 2H20, is: 338 amu 220. amu 114 amu 184 amu 288 amu TTy Another Verslon 2 Item attempts remalning Submit Anser

Q: * Question Completion Status: Barium oxide was synthesized form the reaction of barium and oxygen in…

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Q: Complete the table. Element Mass Moles Number of Atoms Pt 0.0449 Fe 1.14 x 1025 Ti 23.8 mg Hg 2.05

A: Pt : Mass of Pt = moles x molar mass = 0.0449 x 195 = 8.76 g Number of atoms of Pt = moles x…

Q: H 2A 3A 4A SA 6A 7A He LI Be ƏN 1 0N 3 8 Na Mg 3B 4B 58 6B 7B r 8B - 18 28 AI Si PS CI Ar K Ca Sc…

A: In period as moving from left to right, atomic radius decreases due to decrease in nuclear charge.…

Q: The mass percent of CO3 in ca(CO3)2 ( atomic mass C= 12, O = 16, Ca = 40) is O 60% O 77.77%) O 50% O…

A: Mass percent can be calculated by the formula given below as; Mass percent=Mass of the…

Q: Consider the following made-up compound: (DJ)3Q2 Determine the number of moles of element Q in the…

A: Given ,Fake Periodic table.Compound : Mass of = 0.575 gObjective : Determine moles of Q in

Q: What quantity in moles of silver atoms do you have if you have 3.94 * 1021 atoms of silver. (The…

A: The given question is related to stoichiometry. In the given question, it has been asked to…

Q: 3)A pure copper sphere has a radius of 0.935 in. How many copper atoms does the sphere contain? The…

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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: An unknown element X has the following isotopes: 140X (89.00% abundant) and 142X(11.00% abundant).…

A: Since,         Average Atomic mass=Σass of Isotope×% of Isotope100

Q: An unknown element X has the following isotopes: ¹⁴⁰X (89.00% abundant) and ¹⁴²X(11.00% abundant).…

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Q: Determine the number of atoms of O in 24.1 moles of Al2(SO,)3-

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Q: Which sample contains the greatest number of atoms? O 102 g Ag O 189 g Ir O 18 g O O 53 g Fe

A: The number of moles is defined as the ratio of a given mass to molar mass. No. of moles =Given…

Q: An atom consists of two isotopes, the first with an atomic mass of 15.8967 amu and the second with…

A: Atomic mass of first Isotope = 15.8967 amu Atomic mass of second Isotope = 16.8245 amu Average mass…

Q: 6. A sample of Magnesium Chloride (MgCl₂) has a mass of 12.94 g. How many atoms of Clare in the…

A: Given = Mass of MgCl2 = 12.94 g

Q: 5.061 g of a hydrated metal sulfate is heated only 2.472 g of anhydrous metal sulfate remains. What…

A: By heating the water is removed from the molecule . From the weight loss we can calculate the…

Q: Calculate the mass, in grams, of 922 atoms of potassium, K (1 mol of K has a mass of 39.10 g).

A: “Since you have asked multiple question, we will solve the first question for you. If you want any…

Q: a) How many sulfur atoms are there in 3.8 mol of sulfur? b) How many moles of aluminum do 5.8 X…

A: To get number of atom or molecule from mole number, gram etc, we use Avogadro's number.

Q: There are 1.8 x 1024 atoms of chlorine in a sample of magnesium chlorate, Mg(CIO3)2. What is mass of…

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Q: An 85.00 g sample of an unknown compound contains 24.26 g molybdenum, 24.33 g sulfur, and the rest…

A: Given,  Mass of the compound = 85.00 g  Mass of molybdenum = 24.26 g  Mass of sulfur = 24.33 g  Mass…

Q: What is the molar mass of the solid C 6H8 N4 O 4?     2. The following  18  O  -2. How many…

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Q: 7. H₂O + CaO Ca(OH)2 (HINT: Don't forget to multiple the atoms by the number outside their…

A: For balancing the equation, first balance the elements that appear only once on each side of the…

Q: In 6.9 g of aluminum, there are ______ x 1023 aluminum atoms present

A: Molecular mass of atom contains 6.023 × 10^23 atoms. Molar mass of aluminium is 26.981 g/mol

Q: This is CCl4 with a molecular weight of 119. On a mass basis what percent of the material is…

A: The molecular weight of CHCl3 is 119.38 gmol-1 and that of CCl4 is 153.82 gmol-1 .

Q: How many copper atoms are present in a 2017 penny with mass 3.10 g? Modern pennies are 97.5% Zn and…

A: we have a penny of mass 3.10 gram. and it's also mentioned that in  a modern penny the percentage of…

Q: what Mass or NaN3 L6S mol) is needed to produce (28 9 mol-) ? 1.00 g 2 Na Ng 7Z Na+ 3 N2 a) 1.Ss 9…

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Q: Aluminum bronze is a mixture of 92.0% copper (Cu) and 8.0% aluminum (Al) by mass. What percent of…

A: Given : Mass percent of Al = 8.0 % And mass percent of Cu = 92.0 % Assuming 100 g of mixture. Hence…

Q: 9. How many hydrogen atoms are there in 500.0 L of water? (dH.0 = 1.00 g mL) %3D A: 3.34 x 1025 28

A: Given, the volume of water V =500.0 L =500000 mLdensity of water d =1.00 g .mL-1we are asked to…

Q: How many daL of bromine atoms are in 90 x 1022bromine atoms?  (The density of bromine is 3.1 g/cm3)…

A: To get the answer of this question first we calculate the mass of Br atoms given in the question…

Q: There are 1.8 x 1024 atoms of chlorine chlorate, in a sample of magnesium Mg(CIO3)2. What mass of O…

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Q: The mass spectrum of a sample of an element is shown. 50 40 Relative abundance 30 40 50 60 70 20 30…

A: Mass spectrum is the technique used in analytical chemistry for the separation of ions based on the…

Q: In the following How many Pb atoms How many O atoms How many N atoms Pb(NO3)2

A: The molecular name of Pb(NO3)2 is lead (II) nitrate. The molecular mass of lead nitrate is 331.2…

Q: What is the mass of 2.5 moles of zinc chloride (ZnCl₂)? bign Li Be Na Mg 3 Rb kidn 341 g Fr Ra…

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Q: What is the mass of 2.94 x 10 22 atoms of copper? 3.10 g 0.031 g 0.31 g 31.0 g

A: Given -> Number of atoms of Cu  = 2.94 × 1022

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.