magnesium sulfate, MgSO4 ⋅ xH2O. When 6.499 g of Epsom salts are dehydrated by heating, 3.173 g remain. What is the mass percent of water in the hydrated sample? What is x?

Q: In the US, alcohol proof is equal to twice the percent of alcohol (ethanol) by volume, so for…

A: Percentage volume by volume: is one of the ways to express concentration of solution. Formula is:…

Q: Part 1: Calculate the mass percentage of N in N2O4. Report your answer to 3 significant figures.…

A:

Q: What is the mass percentage

A:

Q: H. 1. NABH4 2. Neutralizing work-up

A: Here a reaction is given .For this reaction reagents and products are given.We have to draw the…

Q: A sample of pure alumina hydrate was obtained from a bag of flame retardant. A 5.000 g sample of the…

A: Weight of the hydrated aluminum oxide (Al2O3 . xH2O) = 5.000 g Weight of the anhydrous alumina (when…

Q: C6H6 contaminates a water sample. The sample contains 0.000037% of the compound by mass. How much…

A: Mass percent = (Mass of solute/Mass of solution) x 100 Let us consider the mass percent of solution…

Q: A student weighs an empty beaker at 85.301 g. A sample of Na2SO4·??H2O is added to the beaker, and…

A: Mass of empty beaker = 85.301 g  Mass of beaker + hydrated salt = 86.607 g  Mass of beaker +…

Q: Aspirin can be prepared from salicylic acid ( C7H6O3), which has a molar mass of 138.12 g/mol, and…

A:

Q: The density of water is 1.00 g/mL at 4 degrees Celsius. How many water molecules are present in…

A: First of all calculate the mass of water by using given volume and density of water. Then calculate…

Q: A 6.7283 g sample of a hydrate of MgSO4 was heated to drive off all of the water of hydration. The…

A: The first step is to calculate the mass of water that was lost when the hydrate was heated. This can…

Q: How many moles of NaOH are there in 51.8 mL of 0.300 M NaOH?

A: The given data: The volume  = 51.8 mL The molarity of NaOH =  0.300 mL To determine: The number of…

Q: If  3.68 x 1021 formula units of sodium bromide are reacted with excess chlorine gas, how many…

A:

Q: Aspirin can be prepared from salicylic acid ( C7H6O3 ), which has a molar mass of 138.12 g/mol, and…

A:

Q: the mineral gibbsite has the formula al(oh)3. what mass in,in kg, of al is present in 2.9 kg of…

A: Given, mass of gibbsite,  Al(OH)3  = 2.9 kg = 2900 g Thus, moles of gibbsite can be calculated as,…

Q: chemist prepares a solution of magnesium bromide (MgBr,) by measuring out 1.8 g of me mark with…

A:

Q: The aluminum in a 0.767 g sample of an unknown material was precipitated as aluminum hydroxide,…

A: given: mass of sample of unknown material =0.767 g mass of aluminium oxide produced = 0.143 g…

Q: A 3.72 g sample of iron ore is transformed to a solution of iron(II) sulfate, FeSO4. This solution…

A: Given : Molarity of K2Cr2O7 = 0.110 M Volume of K2Cr2O7 = 60.9 ml. Reaction given :

Q: Gypsum, CaSO4 · 2 H2O, is used to manufacture cement. What is the mass percent of water in this…

A: Given :-  molecular formula of gypsum =  CaSO4 · 2 H2O  To calculate :-  mass percent of water in…

Q: Imagine that you are given 0.2500 g of a sample of copper(II) sulfate pentahydrate (CuSO4 • 5 H2O).…

A: The mass of copper(II) sulfate pentahydrate (CuSO4 • 5 H2O) sample is = 0.2500 g The mass of…

Q: chemist adds  0.95L  of a  0.0010/molL  copper(II) fluoride  CuF2  solution to a reaction flask.…

A:

Q: he doesn't have time to repeat the steps of heating, cooling crucibles, and remeasuring the mass.…

A: Amount of water in a hydrate is calculated by using the formula  Amount of water in a hydrated salt…

Q: A beaker contains 100.0 mL of water. To it is added 10.0 mL of dilute nitric acid (HNO3). Calculate…

A: Volume of water = 100.0mL  Volume of dilute nitric acid = 10.0mL Total volume = 110 mL  Density of…

Q: Benzene (C6H6) is a liquid with a density of 0.874 g cm-3. It reacts with oxygen to give carbon…

A: Density of Benzene = 0.874 g cm-3 Volume of Benzene = 21.3 cm3

Q: Ascorbic acid, or vitamin C (C6H8O6), is an essential vitamin. It cannot be stored by the body and…

A:

Q: Aspirin can be prepared from salicylic acid ( C7H6O3 ), which has a molar mass of 138.12 g/mol, and…

A:

Q: 2Na + Cl2 → 2NaCl. If I want to make 100.0 g of salt, how much elemental chlorine would I need?

A: First convert mass into molar mass  Then use mole-mole relationship  After getting mole of  Cl2 then…

Q: 4. How many moles of water are present in a 20.00 gram sample of lithium permanganate, LiMnO4-3H2O?

A: by using mole concept we easily determine the mole of element are present in reactent and products.

Q: A 4-M sample of hydrochloric acid, HCl, has a density of 1.42 g/ml. What is the mass % (wt/wt) of…

A:

Q: How

A: moles of water = ( molecules of water ) / ( Avogadro number )  Where :  Molecules of water is 2.0 •…

Q: The density of acetic anhydride is 1.08 g/mL.  Calculate the mass (in grams) of acetic anhydride…

A:

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.