Determine the number of moles in 1.30 × 10²³ formula units of MgCl₂.

Q: A flask contains 0.470 mol of liquid bromine, Br2. Determine the number of bromine molecules present…

A: It is given that there is 0.470 mol of liquid bromine.

Q: When I calculate 9.89g of caffeine (C8H10N4O2) into number of atoms I divide the mass by atomic mass…

A: Your calculations are on the right track, but it's important to understand the concept of the mole…

Q: Phenol is a compound of carbon, hydrogen and oxygen that is used commonly as disinfectant.…

A: Given data,Mass of sample=175mg=0.175gMass of CO2=491mg=0.491gMass of H2O=100mg=0.1g

Q: Without using a calculator, arrange the samples in order of increasing numbers of carbon atoms.…

A:

Q: If 1.800 g of aluminum reacted with an excess aqueous HCl to produce 8.894 g of aluminum chloride.…

A: Answer:- firstly a balanced chemical equation is written then using the mass , mass of Al and cl is…

Q: Dimethylhydrazine used in rocket fuel is a carbon - hydrogen - nitrogen compound. When 0.312 g of…

A: the rough formula of the compound is CH4N.

Q: A 1.000 g sample of an unknown compound containing only carbon, hydrogen, and oxygen was analyzed…

A: Given: Mass of sample = 1.000 g Mass of CO2 formed = 2.579 g Mass of H₂O formed = 0.6536 g Molar…

Q: Nitric acid is used in the production of fertilizer as well as nitroglycerin.  Convert 2.9 x 1021…

A: Since, we know that ; 1 mol of nitric acid contains 6.022 × 1023 molecules. So,  2.9 × 1021…

Q: A flask contains 0.490 mol of liquid bromine, Br2Br2. Determine the number of bromine molecules…

A:

Q: A compound has an empirical formula of CH2. An independent analysis gave a value of 70 g/mol for its…

A: Empirical formula is defined as the simplest positive integer ratio of each atom that are supposed…

Q: Determine the number of moles in 6.94 × 10²³ formula units of CaCl₂

A:

Q: Determine the number of moles in 5.57 × 10²³ formula units of BaBr₂.

A: in one avegadro number is equal to 6.022 × 1023 formula unit.

Q: Theoretical mole ratio from formula: moles of Cu per moles of CuCO3 Cu(OH)2 = 1.97.

A: Mole ratio =molar mass of particular compound /molar mass of whole compound.

Q: Determine the quantity (g) of pure CaCl2 in 7.5 g of CaCl2•9H2O. Please show the steps involved.

A: Number of moles of CaCl2.9H2O can be calculated from the given mass and molar mass:

Q: A chemical reaction calls for 0.125 moles of sodium acetate, NaC2H3O2. What mass, in grams, of…

A: The relationship between number of moles (n) and mass of a substance is given by: n=MassMolar…

Q: Complete the table below for calculating the molar mass of the ionic compound silver sulfide.…

A: For determining molar mass of a compound we need to know the formula of the compound.

Q: Calculate the molar mass of Ca(NO3)2.

A: Molar mass of a molecule can be calculated by adding the  molar mass of each and every atom…

Q: Calculate the number of Br atoms in 2.50 g of Br2 Molar Mass Br = 79.904 grams O 1.88 x 1022 Br…

A:

Q: A newly discovered metalloprotein, which contains four atoms of Fe per molecule of protein, is found…

A: Given: Percent by mass of Fe in the compound = 0.747 %. And the number of atoms of Fe per molecule =…

Q: Calculate the number of moles of CaCl2 in 5.0 g of calcium chloride.

A:

Q: A 2.20 g sample of an oxide of bromine is converted to 3.692 g of AgBr. Calculate the empirical…

A: Step : 1         Calculate the empirical formula of the oxide.

Q: Mass NaHCO36.9341 5. Calculate the moles of NaHCO3 in the sample and record the data below. 0.0825…

A: Mass of sodium bicarbonate dissolved= 6.9341 g  Volume of the solution= 0.05 L  Density of the…

Q: Determine the number of moles in 3.50 × 10²³ formula units of BaCl₂

A: We have to find the number of moles present in 3.50*1023 formula units of BaCl2.

Q: 8.40 g of hydrated nickel (II) sulfate is heated to produce 4.60 g of anhydrous compound NiSO4.…

A:

Q: Determine the quantity of moles in 4.21 x 1023 formula units of CaCl₂

A: Number of formula units of CaCl2 = 4.21 × 1023 formula unitsNumber of moles = ?Note:  Avogadro's…

Q: A 16.67gram sample of an organic compound containing C, H and O is analyzed by combustion analysis…

A: Given, Sample of compound containing C,H and O Mass of sample = 16.67 g Mass of CO2 produced = 16.29…

Q: Determine the number of moles in 4.21 x 10^23 molecules of CaCl2

A: One mole of any species contains avagadro number of atoms, molecules, ions etc.

Q: 1.000 g sample of an unknown compound containing only carbon, hydrogen, and oxygen was analyzed…

A: From the mass of CO2 and H2O we can calculate moles of carbon, hydrogen and oxygen. Emperical…

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.