made-up compound: J2(QZ3)2 Determine the number of molecules of J₂(QZ3)2 in 7.2 grams of J₂(QZ3)2 Please refer to the Mini Periodic Table of Fake Elements to answer your questions O 8.21 x 1021 Avogadro's Number: 6.022 x 1023 O 0.0136 O 4.34 x 1024 Mini Periodic Table of Fake Elements O 2.29 x 1027 D 15.00 J 19.00 Q 35.00 Z 70.00

Q: A compound composed of lodine, Carbon, Hydrogen, and Oxygen has the following composition by mass:…

A:

Q: When 1.449 grams of a hydrocarbon, C,Hy, were burned in a combustion analysis apparatus, 4.441 grams…

A: The empirical formula represents the smallest number of each element in a compound, which is…

Q: How many grams per four moles are there in Nitrogen? O 1.008 24.022 48 56.028 5.04

A: The objective of the question is to find out the mass in grams of four moles of Nitrogen.

Q: A house has 4 rooms to paint and each room has an average of 750.0 ft2 to paint. if 1 quart can of…

A: Given: House has 4 rooms to paint. Area of each room = 750.0 ft2  1 quart of paint covers 125 ft2.

Q: Determine the number of grams of Q2Z3 in 0.13 mol of Q₂Z3

A:

Q: A solid circular cone made of pure platinum (density = 21.45 g/cm3) has a diameter of 2.75 cm and a…

A: Given information,    Diameter (d) = 2.75 cm so radius (r) = 1.375 cm     Density = 21.45 g/cm3…

Q: A 1-carat diamond is pure crystaline carbon and has a mass of 0.200 g.Which contains more carbon…

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Q: Suppose a chemical company produces 3.91 X 103 kg of benzene.  The benzene is put into 14.5 L…

A: Given: Mass of benzene produced = 3.91 X 103 Kg = 3.91 X 106 g.                          (Since 1 Kg…

Q: what is the molecular formula of the compound?

A: Given :-  Empirical formula =  C3H4NO2  Molar mass = 258.21 g/mol  To find out :- molecular formula

Q: Select the set-up for the mass % of fluorine, F, in PF3. O (27/42) x 100 O (9/42) x 100 O (19/50) x…

A:

Q: Convert 0.802 moles of Ti (OR T i) to grams. Do not type units with your answer. The atomic weight…

A: Given  Number of mole of Ti  = 0.802 mole  Molar mass of Ti   =  47.87 gram/mole Weight in gram…

Q: If you have 3.0 x 10^24 atoms of Sodium, how many grams of Sodium do you have?  Your conversions…

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

Q: A molecular compound is found to consist of 26.0% nitrogen and 74.0% oxygen. If the molecule…

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Q: Determine the number of moles of cesium in 50.0 g of cesium.

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Q: Calculate the molar mass of the elements (go to the nearest one if your answer does not exactly…

A: Given: 25 g of an element contains 2.37 x 1021 atoms 25 g of an element contains 2.89 x1021 atoms

Q: Elemental analysis of a compound with molar mass 214.22 g/mol gives the following mass percent…

A: Given data,Percent of C=72.89%Percent of H=4.71%Percent of O=22.41%Molar mass of…

Q: What mass (in kg) does 4.41 moles of copper have?     0.784 kg     0.444 kg     0.280 kg…

A: Given -  No of moles =4.41 moles  Molecular mass of  copper (M) = 63.546  g / mol No of moles = 4.41…

Q: 4A1+30₂ -> 2Al₂O3 Given 6 moles of aluminum (Al), how many grams of aluminum oxide (Al2O3) will be…

A: The formula to calculate the number of moles is: Number of moles of a substance=Amount of…

Q: How many MOLECULES of water are present in 9.27 grams of this compound? A) 7.10 x 1023 molecules H,0…

A:

Q: Are the d-orbitals in Zn higher- or lower-E than those in Ni? Will this strengthen or weaken the…

A: Pi back bonding A bonding interaction between the filled d -orbital on the metal and vacant ligand…

Q: What is the mass of one atom of I? O 4.745 x 10-22 g O 3.443 x 10-22 g O 6.641x 10-23 g O 2.107 x…

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Q: What mass of chlorine is contained in 80.3 g of ZnCl2?

A: %w/w = (mass of chlorine in ZnCl2/mass of ZnCl2) × 100

Q: Mass analysis of a common drying agent of organic molecules reveals that it has the empirical…

A:

Q: Sucrose has the molecular formula C12H22011. If a sucrose sample contains 9.0 x 1024 atoms of…

A: Given, Sucrose has the molecular formula: C12H22O11 A sucrose sample contains, Number of atoms of…

Q: How many molecules are there in 39 grams of oxygen? 39.0 g O, x =? molecules O2 32.00 g 02=1 mol O2…

A: Applying formula of moles  n=w/m  No of molecules=n×NA

Q: 3. What is the difference between an empirical formula and a molecular formula?

A: If the percent composition of the elements are known then the empirical formula can be determined.…

Q: Calculate the number of oxygen atoms in 25.1 g of nitric acid. O 4.80 x 1023 oxygen atoms O 7.19 x…

A: The number of moles of a substance is the mass of the substance upon its molar mass.

Q: A 2.41 g sample of nitrous oxide (an anesthetic sometimes called laughing gas) contains 3.30 x 102…

A: Given: Number of molecules of N2O =3.30×1022 molecules And mass of N2O sample =2.41 g

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: Determination of Hydrate Formula: barium chloride hydrate  Data:…

A: While heating the hydrate BaCl2.nH2O, the water in it escapes as water vapor. The amount of salt…

Q: A laboratory analysis of an unknown sample yields 73.13% carbon, 7.38% hydrogen, and 19.49% oxygen.…

A:

Q: Chemical analysis was performed on a compound with formula CyHySinOz. Sample 1: Combustion analysis…

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

A: Given data:

Q: Fe203 + 3 CO → 2 Fe + 3 CO2 If the reaction uses 55.5 liters of CO gas, how many molecules is this?

A:

Q: You can also calculate percent composition from a formula. This is similar to percent abundance in…

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Q: Combustion analysis of 1.200 g of an unknown compound containing carbon, hydrogen, and oxygen…

A:

Q: A newly found compound was discovered to contain 4 iron atoms. If the molar mass of this compound is…

A:

Q: If 1.000 g of tin metal reacts with 0.480 g of fluorine gas, what is the empirical formula of the…

A: No of moles of tin(Sn) =mass of tin(Sn) /molar mass of tin(Sn) =1/118.72 mol of Sn =0.0084232 mol of…

Q: bromine carbon chlorine hydrogen % of Total Mass 41.7 18.8 36.8 2.6 Atomic Mass 79.9 12.0…

A: The mass percentage of bromine, carbon, chlorine, and hydrogen is 41.7%, 18.8%, 36.8%, and 2.6%,…

Q: How many calcium atoms are in 1 g of CaO? O 9.553 x 10-23 O 7.201 x 1023 O 1.074 x 1022 O 1.422 x…

A:

Q: Calculate the molar mass of the elements (go to the nearest one if your answer does not exactly…

A: Given, mass of an element and atoms it contains.  To identify its molar mass and the Element. First,…

Q: Consider the following reaction N2 (g) + 3H2 (g) ? 2NH3 g If 1.10 x 10 g N2 is reacted with 500 x 10…

A: The given reaction is, N2 (g) + 3H2 (g) →2NH3 (g) Given that: mass of N2 = 1.10×103 g mass of H2 =…

Q: When 1.717 grams of a hydrocarbon, CxHy, were burned in a combustion analysis apparatus, 5.805 grams…

A: Answer:The formula in which all the atoms are represented in their simplest integer ratio is called…

Q: A chemist decomposes samples of several compounds; the masses of their constituent elements are…

A: Weight of Co = 0.672g Weight of As = 0.569g Weight of oxygen = 0.486g Atomic weight of Co =…

Q: A student is running an experiment in which 40.0 grams of BeSO4 is needed, but the only jar of…

A: In the lab the beryllium sulfate is present at beryllium sulfate tetrahydrate.The mass of BeSO4…

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.