A 5.70 g mixture contains both lithium fluoride, LiF, and potassium fluoride, KF. If the mixture contains 3.53 g fluorine, what is the mass of the KF in the mixture?

Q: A particular brand of beef jerky contains 0.0552% sodium nitrite by mass and is sold in an 8.00-oz…

A: The concentration of any solution can be shown by either expressing its molarity, molality,…

Q: A 3.000 g sample of a gaseous compound was found to contain 2.560 g of carbon and  0.440 g of…

A: To answer this first of all we have to convert grams into moles and we have to determine the simple…

Q: The elemental composition of the welding gas acetylene (C2H2) is 92.24% C and 7.76% H by mass. What…

A: Since from the formula of acetylene, we can say that the number of atoms of C and H are same in it.…

Q: Assume the atomic mass of element X is 22.99 amu. A 22.42−g sample of X combines with 123.73 g of…

A: Mass of X = 22.42 g Mass of Y =123.73 g Atomic mass of element X = 22.99 amu Atomic mass of element…

Q: A certain sample of butane fuel (C4H10) was analyzed and found to contain 1.8 x 1024 hydrogen atoms.…

A: Octane is a hydrocarbon of alkane category. Its general formula is CnH2n+2 where n is an integer.The…

Q: A scientist is trying to discover information about an unknown metal in a compound. The formula for…

A: Formula of the compound = XBr3 4.737 g sample of this compound contains 5.329×10−2 mol Br

Q: You wish to prepare 205 grams of 14.3 % MgSsO4- You will need grams of magnesium sulfate and mL of…

A: Given that, % of MgSO4 = 14.3%  ,  Total mass = 205 gms Also, % of MgSO4 = Mass of MgSO4Total…

Q: A student, Ken, is given a mixture containing two nitrate compoundsnitrate compounds. The mixture…

A:

Q: A 15-g sample of lithium is reacted with 15 g of fluorine to form lithium fluoride: 2Li + F2 →…

A: First convert mass into mole by diving molar mass respectively Then Calculate limiting reagent by…

Q: A sample of CO2 has a mass of 50.0 grams. What is the number of molecules of carbon dioxide in the…

A: We know,Number of mole = mass of sample (g)molar mass (gmol-1)and1 mol = 6.022x1023 molecule

Q: You wish to prepare 210 grams of 16.3 % Mg(NO3)2 You will need grams of magnesium nitrate and mL of…

A: Given that we have to prepare a 210 grams of 16.3 % MgNO32 solution. Recall the expression of mass…

Q: A sample of rubbing alcohol solution contains ethanol, C2H5OH(l). If the sample contains 1.25 × 1023…

A: Given;

Q: Write the balanced chemical equation for the reaction of aqueous sodium carbonate with aqueous…

A: A balanced chemical equation is the one that consists of equal number of every atom of an element at…

Q: A 1.500-g sample of a mixture containing only Cu2O and CuO was treated with hydrogen to produce…

A:

Q: A scientist is trying to discover information about an unknown metal in a compound. The formula for…

A:

Q: A 5.00 g mixture of potassium sulfide and potassium chloride contains 2.80 g potassium. What…

A: The mass percentage is calculated using the formula given below: Mass percentage =mass of potassium…

Q: A scientist is trying to discover information about an unknown metal in a compound. The formula for…

A:

Q: 1)Copper metal reacts with molecular nitrogen to form copper(II) nitride.  a)Write the balanced…

A:

Q: A scientist is trying to discover information about an unknown metal in a compound. The formula for…

A: Step - 1Formula for the compound = XBr3Means in 1 mol of compound 3 mol of Bromine are…

Q: A student, Ken, is given a mixture containing two nitrate compounds. The mixture includes NaNO3 and…

A: Mass Percentage of NO3 in the mixture is 73.76%. it implies that 100 g of mixture contains 73.76 g…

Q: A student determined the mass of NaCl extracted during an experiment to be 0.42 grams. If the mass…

A: Given  Mass of NaCl = 0.42 g Mass of original mixture = 1.97 g

Q: A scientist is trying to discover information about an unknown metal in a compound. The formula for…

A:

Q: 2. A mixture weighing 1.250 grams is 20.0% sodium nitrate, 56.0% silicon dioxide, and the rest is…

A:

Q: An impure sample of table salt (NaCl) that was dissolved in water and treated with silver nitrate to…

A: Mass of the impure sample = 1.741 g  Mass of AgCl formed = 4.084 g

Q: An unknown compound has the following chemical formula: Mn (CN) where x stands for a whole number.…

A: Mole of carbon= 5.9Mole of Mn = 3.0

Q: A combustion analysis of 5.214 g of a compound yields 5.34 g CO, 1.09 g HO, and 1.70 g N. If the…

A: Correction: It should be CO2  not CO It should be H2O not HO It should be N2 not N Given, Mass of…

Q: A 3.000 g sample of a gaseous compound was found to contain 2.560 g of carbon and 0.440 g of…

A: To solve thia problem first we have to calculate the number mole of C and H in the given sample.  By…

Q: Iron (Fe) reacts with hydrochloric acid (HCl) to produce iron (II) chloride (FeCl2) and hydrogen gas…

A: The balance chemical reaction of the formation of rust from Fe and oxygen is as given:

Q: A student, Ken, is given a mixture containing two carbonate compounds. The mixture includes  MgCO3…

A:

Q: Write the balanced chemical equation for the reaction of aqueous potassium hydroxide with aqueous…

A: Chemical equation is the representation of a chemical reaction, in which the reactants and products…

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.